We are happy to provide handyman, home repair and home improvement services to the broader Portland area - from Oregon City to Scappose and Forest Grove to Gresham, including Lake Oswego, West Linn, Beaverton, and all areas of Portland. Our specialty is anything in and around the home (or business) that takes between two hours and two days to complete. We offer free over-the-phone estimates and firm appointment times to save you time, all our handymen are licensed, bonded, and ensured as our employees, and we guarantee our work for a year.
"They provided excellent service. We will definitely hire them again."
Charles N on April 2025
We are happy to provide handyman, home repair and home improvement services to the broader Portland area - from Oregon City to Scappose and Forest Grove to Gresham, including Lake Oswego, West Linn, Beaverton, and all areas of Portland. Our specialty is anything in and around the home (or business) that takes between two hours and two days to complete. We offer free over-the-phone estimates and firm appointment times to save you time, all our handymen are licensed, bonded, and ensured as our employees, and we guarantee our work for a year.
"They provided excellent service. We will definitely hire them again."
Charles N on April 2025
Residential remodel/repair and handyman service. Interior and exterior work. Basement remodel are our specialty. Work both by quote or hourly. 100% referral, word of mouth
"Where to start, I hired Jim at Evolution to do an exterior home remodel. This was three years ago. This included windows, siding, doors, roof, and gutters. Two jobs (the house roof and the gutters) were done by two other companies that he hired. The gutters are leaking and not doing their job at this point. They are not blocked nor do they have debris in them. The seams are failing. There are three spots currently. Also they put a downspout in the middle of the gutter and not on the end. So there’s issues associated with that. Jim was to do the siding, windows, screen doors, basement door, and carport roof. His costs were the best out of several contractors and he was recommended by a friend. We were drawn to another company but we decided to go with Evolution and Jim. So I mentioned the carport, we needed to redo it. I am a novice when it comes to building but I figured I could build the carport and have Jim roof it (originally it was going to be the other subcontracted roofers doing it). So I constructed, after doing research, the carport. Jim arrives and says it’s too flat and that it’s not safe to shingle it. so he says we could but corrugated plastic up in its place. I agree to that as I am assuming he knows what he’s talking about. He proceeds to do the job. The carport roof, the siding, the windows. I recently installed a patio with pavers right before he started his work here. I with my neighbors help did the work. My neighbor then installed a concrete border around the patio. At one point Jim and his crew rent a scissor lift and proceed to drive it (I think the sticker said 2500 pounds on the side of the machine) onto the patio to instal a window upstairs. They cracked the new concrete border and cracked about 10 pavers. They decided not to mention it to me, but I noticed it. I waited till the end of the day when Jim was sitting in his vehicle to leave and I approached him. He said they would fix it. Their fix was flipping the pavers over and not addressing the cracked concrete border. Disappointing but ok. So back to the carport which is my ultimate complaint. Jim completes all the projects including the plastic on the carport. Within days there are multiple leaks on the carport. Jim sends a helper out to put some caulk on it. The next day it’s leaking all along where the plastic meets the newly shingled roof. I contact Jim about the situation and he says “I’m washing my hands clean of this problem”. I plead with him to help address it and he sends me a email saying I screwed up the carport and that if an inspector saw it they would make me take it down. So I drop it. Over the next three years we are to the point of replacing the roof, yet the carport structure is solid. The plastic has shattered on the south side where it wasn’t connected properly, no flashing was installed so the water has damaged all of his supports causing them to warp, it leaks everywhere rendering the carport useless. Since Jim refused to address it I contacted another contractor to see what they could do. They came out and determined Jim botched the carport roof in several ways. No flashing, un proper cross beam placement, un proper overlap of plastic, un proper attachment to my structure. My structure was sound with no issues. So I reach out to Jim again about the issue and asked him repeatedly to come back out to see what was happening, in hopes he would fix it. It has been three years at this point. He doubled down with what he said before. Got upset that I asked another contractor to look at it (even though he refused too). He repeatedly asked me if I wanted him to come out. Which I reply with yes, over and over again. He never came. To be blunt he was incredibly rude. I’ll happily post what he wrote of the need arises. The bottom line to me is this. If I built the structure poorly (as he claimed… even though I think he wanted to initially do it but cost prevented it) why would you cover something that was built poorly. I would of said I can’t legally cover that structure or maybe even it’s built in a way that I can’t insure a leak free roof (again it was a matter of days I reported leaks to him). Secondly after I paid over 50,000 dollars to him, why wouldn’t you try to fix the roof just to be helpful especially since I contacted him within days. Thirdly why be a rude and condescending. Overall it was a huge let down. The new carport roof will cost about 3000. All his supports and the plastic top. The patio damage and the lack of care in fixing his issues he created. I would never recommend Jim or Evolution."
Rolf G on June 2023
Residential remodel/repair and handyman service. Interior and exterior work. Basement remodel are our specialty. Work both by quote or hourly. 100% referral, word of mouth
"Where to start, I hired Jim at Evolution to do an exterior home remodel. This was three years ago. This included windows, siding, doors, roof, and gutters. Two jobs (the house roof and the gutters) were done by two other companies that he hired. The gutters are leaking and not doing their job at this point. They are not blocked nor do they have debris in them. The seams are failing. There are three spots currently. Also they put a downspout in the middle of the gutter and not on the end. So there’s issues associated with that. Jim was to do the siding, windows, screen doors, basement door, and carport roof. His costs were the best out of several contractors and he was recommended by a friend. We were drawn to another company but we decided to go with Evolution and Jim. So I mentioned the carport, we needed to redo it. I am a novice when it comes to building but I figured I could build the carport and have Jim roof it (originally it was going to be the other subcontracted roofers doing it). So I constructed, after doing research, the carport. Jim arrives and says it’s too flat and that it’s not safe to shingle it. so he says we could but corrugated plastic up in its place. I agree to that as I am assuming he knows what he’s talking about. He proceeds to do the job. The carport roof, the siding, the windows. I recently installed a patio with pavers right before he started his work here. I with my neighbors help did the work. My neighbor then installed a concrete border around the patio. At one point Jim and his crew rent a scissor lift and proceed to drive it (I think the sticker said 2500 pounds on the side of the machine) onto the patio to instal a window upstairs. They cracked the new concrete border and cracked about 10 pavers. They decided not to mention it to me, but I noticed it. I waited till the end of the day when Jim was sitting in his vehicle to leave and I approached him. He said they would fix it. Their fix was flipping the pavers over and not addressing the cracked concrete border. Disappointing but ok. So back to the carport which is my ultimate complaint. Jim completes all the projects including the plastic on the carport. Within days there are multiple leaks on the carport. Jim sends a helper out to put some caulk on it. The next day it’s leaking all along where the plastic meets the newly shingled roof. I contact Jim about the situation and he says “I’m washing my hands clean of this problem”. I plead with him to help address it and he sends me a email saying I screwed up the carport and that if an inspector saw it they would make me take it down. So I drop it. Over the next three years we are to the point of replacing the roof, yet the carport structure is solid. The plastic has shattered on the south side where it wasn’t connected properly, no flashing was installed so the water has damaged all of his supports causing them to warp, it leaks everywhere rendering the carport useless. Since Jim refused to address it I contacted another contractor to see what they could do. They came out and determined Jim botched the carport roof in several ways. No flashing, un proper cross beam placement, un proper overlap of plastic, un proper attachment to my structure. My structure was sound with no issues. So I reach out to Jim again about the issue and asked him repeatedly to come back out to see what was happening, in hopes he would fix it. It has been three years at this point. He doubled down with what he said before. Got upset that I asked another contractor to look at it (even though he refused too). He repeatedly asked me if I wanted him to come out. Which I reply with yes, over and over again. He never came. To be blunt he was incredibly rude. I’ll happily post what he wrote of the need arises. The bottom line to me is this. If I built the structure poorly (as he claimed… even though I think he wanted to initially do it but cost prevented it) why would you cover something that was built poorly. I would of said I can’t legally cover that structure or maybe even it’s built in a way that I can’t insure a leak free roof (again it was a matter of days I reported leaks to him). Secondly after I paid over 50,000 dollars to him, why wouldn’t you try to fix the roof just to be helpful especially since I contacted him within days. Thirdly why be a rude and condescending. Overall it was a huge let down. The new carport roof will cost about 3000. All his supports and the plastic top. The patio damage and the lack of care in fixing his issues he created. I would never recommend Jim or Evolution."
Rolf G on June 2023
Why Choose Us? - Experienced & Certified Technicians - Trusted by the Local Community - Licensed & Insured - Competitive Pricing - Punctual and Reliable Service - Eco-Friendly HVAC Options - Customer Satisfaction Guaranteed Let us handle all your HVAC needs, so you can enjoy a comfortable and cozy home year-round. We proudly serve the Portland metro area and surrounding communities. Hurry, beat the rush, and take advantage of our special offers and discounts!
"Found problem and fixed, pleasant service man seems to know his stuff"
Sue S on April 2024
Why Choose Us? - Experienced & Certified Technicians - Trusted by the Local Community - Licensed & Insured - Competitive Pricing - Punctual and Reliable Service - Eco-Friendly HVAC Options - Customer Satisfaction Guaranteed Let us handle all your HVAC needs, so you can enjoy a comfortable and cozy home year-round. We proudly serve the Portland metro area and surrounding communities. Hurry, beat the rush, and take advantage of our special offers and discounts!
"Found problem and fixed, pleasant service man seems to know his stuff"
Sue S on April 2024
Glacier HVAC/R is a small family owned business located in Estacada, Oregon. With twenty years of experience, our goal is to accommodate heating and air conditioning at affordable prices. We service Clackamas, Multnomah and neighboring counties.
"From beginning to end these guys were a genuine pleasure to work with. Honest, extremely competent, and just nice guys! Reminds me of the way business used to be done in this country! High recommended!!!"
Daniel J on September 2024
Glacier HVAC/R is a small family owned business located in Estacada, Oregon. With twenty years of experience, our goal is to accommodate heating and air conditioning at affordable prices. We service Clackamas, Multnomah and neighboring counties.
"From beginning to end these guys were a genuine pleasure to work with. Honest, extremely competent, and just nice guys! Reminds me of the way business used to be done in this country! High recommended!!!"
Daniel J on September 2024
Whether you are looking for heating and air conditioning service or repair, dependable installation of a furnace, air conditioner, heat pump or ductless system, or need to improve the air quality in your home, ABSOLUTE TEMP CONTROL is your safe choice. We are a one stop shop, and we have been serving the NW Oregon and SW Washington region since 1997. We offer a full line of HVAC products, custom metal fabrication duct and fittings. We offer the most dependable products top notch workmanship at very competitive rates. Our goal is to serve our customers with the best service in our industry. Family owned and operated. 2-3 Employees. Cost is competitive and fare, and always the same for all customers. Professionally recognized and worked with other big name companies in the Portland Metro area and national companies in said trade.
"John was a good communicator and organized the work well."
Andrew D on May 2025
Whether you are looking for heating and air conditioning service or repair, dependable installation of a furnace, air conditioner, heat pump or ductless system, or need to improve the air quality in your home, ABSOLUTE TEMP CONTROL is your safe choice. We are a one stop shop, and we have been serving the NW Oregon and SW Washington region since 1997. We offer a full line of HVAC products, custom metal fabrication duct and fittings. We offer the most dependable products top notch workmanship at very competitive rates. Our goal is to serve our customers with the best service in our industry. Family owned and operated. 2-3 Employees. Cost is competitive and fare, and always the same for all customers. Professionally recognized and worked with other big name companies in the Portland Metro area and national companies in said trade.
"John was a good communicator and organized the work well."
Andrew D on May 2025
Proudly serving the greater Portland and Clark County area since 1952. Our expert technicians install and service the latest in HVAC technology. Call (360) 835-3121 now for an estimate and ask about energy rebates. After hour service available - are technicians are on standby to help you!
"made an appointment because the price quoted to me to diagnose my issue was $89 plus tax, if any repairs are made that would be additional. technician spent 15 min in attic to determine nothing was wrong and then spent remaining time speculating what it could be. After all was said and nothing done my bill came to $307. Technician indicated that it was an extended diagnostic visit. I was shocked and appalled! No tools were used, no repairs were done just the technician speculating on my dime. Contacted the main office and Eva said she would refund me $89 by check. It's gouging and dishonest. If I had known i was being charged by the hour, I guarantee he would have been out of my house 20 mins after he arrived. Im considering contacting the BBB and the attorney general if this is not resolved satisfactorily. I have no problem paying the diagnostics charge of $89 plus tax but not the extended portion."
mary s on February 2020
Proudly serving the greater Portland and Clark County area since 1952. Our expert technicians install and service the latest in HVAC technology. Call (360) 835-3121 now for an estimate and ask about energy rebates. After hour service available - are technicians are on standby to help you!
"made an appointment because the price quoted to me to diagnose my issue was $89 plus tax, if any repairs are made that would be additional. technician spent 15 min in attic to determine nothing was wrong and then spent remaining time speculating what it could be. After all was said and nothing done my bill came to $307. Technician indicated that it was an extended diagnostic visit. I was shocked and appalled! No tools were used, no repairs were done just the technician speculating on my dime. Contacted the main office and Eva said she would refund me $89 by check. It's gouging and dishonest. If I had known i was being charged by the hour, I guarantee he would have been out of my house 20 mins after he arrived. Im considering contacting the BBB and the attorney general if this is not resolved satisfactorily. I have no problem paying the diagnostics charge of $89 plus tax but not the extended portion."
mary s on February 2020
Comfort since 2001, Comfort Solutions Heating & Cooling has had one mission: to serve our clients the way we want to be served. As a family-owned company, we are serious about taking care of our community, treating everyone like our own. This shows in the way we do business. We encourage our staff to use their skills and experience to deliver the best solutions for our clients and ensure customer satisfaction. Our extremely knowledgeable staff can install, service, and maintain your home heating and cooling system backed with a premium lifetime workmanship guarantee that is almost exclusive to Comfort Solutions. We can also provide up to a Carrier 10 years parts and labor warranties. Comfort Solutions also installs and services traditional gas furnaces, air conditioners, heat pumps, and ductless heat pumps by all manufacturers. Our dedication to "Simply Outstanding Service" has taught us, and our most satisfied customers, that a E.P.A. (Equipment Protection Agreement) is the most effective and efficient method of keeping your home comfort system running smoothly...longer. Call us today for more information on a E.P.A.
"“I would never do business again with Comfort Solutions and Heating. On Oct. 31, one of their servicemen came out to clean our furnace. Three hours later, it quit working. A technician came out again November 1 and installed a new circuit board for $1.065.33 but our furnace still didn't work. In his invoice, he noted that we wanted a new gas furnace since ours was 17 years old, but still came out again November 5 and installed a gas valve which cost $550. Finally Comfort Solutions realized we were looking for a bid proposal. Their final offer was $7,159.19 which didn't include an air filter. I told them we wanted to seek other bid proposals. Comfort Solutions did offer to give us a credit of $1,083 for the circuit board and gas valve. A very reputable firm in business for 92 years, Robber & Sons gave us a proposal for $4,860 including an air filter and a new thermostat. I contacted Brian Adams, the owner of Comfort Solutions asking him to either match their price or give us the credit for the circuit board and gas valve, sending him an email and mailing a letter to him. Five days later and he has yet to contact us. I can't tell you how disappointed I am at Mr. Adams. My wife and I are senior citizens on limited income.. I'm pleased we found another furnace company that isn't overcharging us.”"
Diane L on November 2024
Comfort since 2001, Comfort Solutions Heating & Cooling has had one mission: to serve our clients the way we want to be served. As a family-owned company, we are serious about taking care of our community, treating everyone like our own. This shows in the way we do business. We encourage our staff to use their skills and experience to deliver the best solutions for our clients and ensure customer satisfaction. Our extremely knowledgeable staff can install, service, and maintain your home heating and cooling system backed with a premium lifetime workmanship guarantee that is almost exclusive to Comfort Solutions. We can also provide up to a Carrier 10 years parts and labor warranties. Comfort Solutions also installs and services traditional gas furnaces, air conditioners, heat pumps, and ductless heat pumps by all manufacturers. Our dedication to "Simply Outstanding Service" has taught us, and our most satisfied customers, that a E.P.A. (Equipment Protection Agreement) is the most effective and efficient method of keeping your home comfort system running smoothly...longer. Call us today for more information on a E.P.A.
"“I would never do business again with Comfort Solutions and Heating. On Oct. 31, one of their servicemen came out to clean our furnace. Three hours later, it quit working. A technician came out again November 1 and installed a new circuit board for $1.065.33 but our furnace still didn't work. In his invoice, he noted that we wanted a new gas furnace since ours was 17 years old, but still came out again November 5 and installed a gas valve which cost $550. Finally Comfort Solutions realized we were looking for a bid proposal. Their final offer was $7,159.19 which didn't include an air filter. I told them we wanted to seek other bid proposals. Comfort Solutions did offer to give us a credit of $1,083 for the circuit board and gas valve. A very reputable firm in business for 92 years, Robber & Sons gave us a proposal for $4,860 including an air filter and a new thermostat. I contacted Brian Adams, the owner of Comfort Solutions asking him to either match their price or give us the credit for the circuit board and gas valve, sending him an email and mailing a letter to him. Five days later and he has yet to contact us. I can't tell you how disappointed I am at Mr. Adams. My wife and I are senior citizens on limited income.. I'm pleased we found another furnace company that isn't overcharging us.”"
Diane L on November 2024
Local Family Owned and Operated Since 1992. Carrier Factory Authorized Dealer. We support local businesses and organizations in the Metro area and we try to source our materials and supplies locally.
"Trustworthy honest I am happy to say Service Now is the best Furnace/Air conditioning service co that I have used in my Beaverton home for 30 years. I appreciate the employees Hudson and Seth who were polite, efficient and thorough."
L S G on October 2024
Local Family Owned and Operated Since 1992. Carrier Factory Authorized Dealer. We support local businesses and organizations in the Metro area and we try to source our materials and supplies locally.
"Trustworthy honest I am happy to say Service Now is the best Furnace/Air conditioning service co that I have used in my Beaverton home for 30 years. I appreciate the employees Hudson and Seth who were polite, efficient and thorough."
L S G on October 2024
Since 1976, Roth Home has been committed to one thing: providing the very best heating, cooling, plumbing, electrical, and drain services in the greater Portland area, coupled with truly outstanding customer care. Throughout the decades, we’ve been helping residential and commercial customers throughout the region achieve the comfort and safety they need. The Roth team goes above and beyond for every customer, offering custom solutions and fast, honest repairs when you need them most. We’re even available for 24/7 emergency services! As a full-service heating, cooling, plumbing, and electrical company in Portland and serving the entire region, Roth Home has what it takes to tackle any home service problem. From new water heater installation to furnace repairs to AC replacement, drain cleaning, whole home repiping, electrical panel upgrades, new lighting installation, and more, we can help ensure that your home or business is in tip-top shape. With Roth, one call does it all! Find out more about our comprehensive range of services, or request your appointment today when you call our friendly and professional team!
"A+ job! Wonderful workmanship! ."
Toni M on June 2025
Since 1976, Roth Home has been committed to one thing: providing the very best heating, cooling, plumbing, electrical, and drain services in the greater Portland area, coupled with truly outstanding customer care. Throughout the decades, we’ve been helping residential and commercial customers throughout the region achieve the comfort and safety they need. The Roth team goes above and beyond for every customer, offering custom solutions and fast, honest repairs when you need them most. We’re even available for 24/7 emergency services! As a full-service heating, cooling, plumbing, and electrical company in Portland and serving the entire region, Roth Home has what it takes to tackle any home service problem. From new water heater installation to furnace repairs to AC replacement, drain cleaning, whole home repiping, electrical panel upgrades, new lighting installation, and more, we can help ensure that your home or business is in tip-top shape. With Roth, one call does it all! Find out more about our comprehensive range of services, or request your appointment today when you call our friendly and professional team!
"A+ job! Wonderful workmanship! ."
Toni M on June 2025
Corner Image Properties: Your Trusted Partner in Home Repairs, Maintenance, and Renovations www.cornerimageproperties.com Instagram: https://www.instagram.com/cornerimageproperties/ Facebook: https://www.facebook.com/profile.php?id=61562390573978 At Corner Image Properties, we bring years of experience in property management, repairs, and remodeling to every project. Whether you need emergency repairs, design upgrades, routine maintenance, or outdoor care, we’re here to deliver exceptional results with attention to detail and a commitment to quality. Our Services Include: Water Damage Repair: From replacing floating floors after freezes to removing moldy sheetrock and restoring walls with precision, we handle it all. Landscaping, Hardscaping & Yard Maintenance: Transform your outdoor spaces with expert care, from hedge trimming and mowing to full landscaping and hardscaping projects. Power Washing: Refresh your property’s exterior with professional power washing for driveways, sidewalks, and siding. Interior & Exterior Repairs: Painting, Sheetrocking, woodwork, roofing, and more—no project is too big or small. Framing & Carpentry: Custom woodwork and framing to match your home’s unique needs. Door & Window Repairs: Ensure your home is secure, energy-efficient, and beautiful. Design & Remodeling Services: From rent-ready units to Airbnb staging, we combine construction expertise with thoughtful design to make spaces functional and stunning. Why Choose Us? We’re not above rolling up our sleeves for tasks like power washing or trimming hedges. As hands-on property managers, we’ve done it all. Our experience spans everything from major repairs to full-scale remodels, including rental and Airbnb properties. We prioritize customer satisfaction, clear communication, and high-quality craftsmanship every step of the way. Let Corner Image Properties help you restore, maintain, and enhance your property—inside and out. Contact us today to get started!
"On time, on budget. Got the work done with no interference to my business. Looks great."
Patrick S on January 2025
Corner Image Properties: Your Trusted Partner in Home Repairs, Maintenance, and Renovations www.cornerimageproperties.com Instagram: https://www.instagram.com/cornerimageproperties/ Facebook: https://www.facebook.com/profile.php?id=61562390573978 At Corner Image Properties, we bring years of experience in property management, repairs, and remodeling to every project. Whether you need emergency repairs, design upgrades, routine maintenance, or outdoor care, we’re here to deliver exceptional results with attention to detail and a commitment to quality. Our Services Include: Water Damage Repair: From replacing floating floors after freezes to removing moldy sheetrock and restoring walls with precision, we handle it all. Landscaping, Hardscaping & Yard Maintenance: Transform your outdoor spaces with expert care, from hedge trimming and mowing to full landscaping and hardscaping projects. Power Washing: Refresh your property’s exterior with professional power washing for driveways, sidewalks, and siding. Interior & Exterior Repairs: Painting, Sheetrocking, woodwork, roofing, and more—no project is too big or small. Framing & Carpentry: Custom woodwork and framing to match your home’s unique needs. Door & Window Repairs: Ensure your home is secure, energy-efficient, and beautiful. Design & Remodeling Services: From rent-ready units to Airbnb staging, we combine construction expertise with thoughtful design to make spaces functional and stunning. Why Choose Us? We’re not above rolling up our sleeves for tasks like power washing or trimming hedges. As hands-on property managers, we’ve done it all. Our experience spans everything from major repairs to full-scale remodels, including rental and Airbnb properties. We prioritize customer satisfaction, clear communication, and high-quality craftsmanship every step of the way. Let Corner Image Properties help you restore, maintain, and enhance your property—inside and out. Contact us today to get started!
"On time, on budget. Got the work done with no interference to my business. Looks great."
Patrick S on January 2025
Swamp coolers are quite energy-efficient, using only 15% to 35% of the electricity that traditional central air conditioning units consume. This can lead to significant savings on your energy bills. However, keep in mind that swamp coolers require water to operate and may not cool your home as effectively in extremely hot or humid conditions. When considering overall efficiency, it is essential to weigh both electricity and water usage, as well as the cooling needs specific to your local climate.
Evaporative coolers only work in dry climates because they cool by moistening the air. If the air is already moist, this will have little to no cooling effect. Central AC is a better choice if you live in a humid climate, such as the Midwest, eastern, or western coastal regions.
To install a swamp cooler on a roof, a local HVAC specialist will first find and cut a spot free of wiring and obstructions. They’ll then install metal bracing, legs, brackets, the ceiling duct register, ductwork, power, and thermostat wires. Once installed, they’ll seal all openings, attach duct connections, and install a thermostat. Before leaving, they’ll run cool water piping to the unit and inspect all the connections.
The cost to repair your swamp cooler ranges from $50 to $600, depending on the issue, whether new parts are needed, and the chosen repair service. Depending on the type of pad your system uses, you will need to change out the pads every one to three years for proper operation. When budgeting for the cost to repair a window unit, expect to pay around $230.
The U.S. Department of Energy states that swamp coolers can cool a single room by five to 15 degrees Fahrenheit. However, this largely depends on the size and installation method of the evaporative cooler. You can only achieve these results in a dry climate, such as the American South, as it’s easier to cool rooms in humid environments with central air.
Swamp cooler water usage varies depending on the size of the unit. Smaller evaporative units may use one gallon per hour, while much larger units could use up to 15 gallons of water per hour. Most homeowners can expect their unit to use between seven and 10 gallons of water per hour of usage.