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Find Central humidifier installers and replacers in Seattle

Avatar for Alpina Mechanical, LLC

Alpina Mechanical, LLC

3229 156th Street SW
4.67(
3
)
•Approved Pro

Alpina Mechanical, LLC

3229 156th Street SW
4.67(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Here at Alpina Mechanical we are a fully licenses and insured HVAC company working with commercial and residential customers. No job is out of our wheelhouse and we do repairs and installs on all HVAc systems. Call now for a free estimate.

"Because of their personnel; exceptional competence, efficiency, and attention to detail, every installation and repair was completed to the highest standards. They provided prompt service, transparent communication, and reasonable prices. Alpina Mechanical was a dependable option for HVAC needs because they continuously provided dependable and high-quality service, regardless of the nature of the work from routine maintenance to emergency repairs."

Cloe G on July 2024

Here at Alpina Mechanical we are a fully licenses and insured HVAC company working with commercial and residential customers. No job is out of our wheelhouse and we do repairs and installs on all HVAc systems. Call now for a free estimate.

"Because of their personnel; exceptional competence, efficiency, and attention to detail, every installation and repair was completed to the highest standards. They provided prompt service, transparent communication, and reasonable prices. Alpina Mechanical was a dependable option for HVAC needs because they continuously provided dependable and high-quality service, regardless of the nature of the work from routine maintenance to emergency repairs."

Cloe G on July 2024

Avatar for Greenwood Heating and Home Services

Greenwood Heating and Home Services

14027 Interurban Ave S
4.70(
380
)
•Approved Pro

Greenwood Heating and Home Services

14027 Interurban Ave S
4.70(
380
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
46 local quotes requested

Greenwood Heating and Home Services is your one stop shop for all your mechanical needs, Heating, Air Conditioning, Electrical and Plumbing. We do it all! Repair, replace or maintain, all with our 100% Customer Satisfaction Guarantee. We have operated for over 100 years in the Greater Seattle area, and we locally owned and operated. Our team follows our Core Values of, Pride, Professionalism, Communication, Safety and Integrity. We focus on training our technicians to do things right the first time in our state of the art Training Center in Tukwila. When we complete the work in your home “You’ll Never Want to Leave the Comfort of Home!”

"We went with Greenwood because we heard that they would take care of us, even though they were more expensive. We had a great experience with the first walkthrough with a knowledgable expert, but every interaction since has been poor. We had several issues with the installation; they had to come back several times. Five years later, the water pump with the furnace broke and they take care of it, but it costs $900. They take care of us, but continue to be expensive. I highly recommend avoiding this company and finding a business that knows what their doing and where all technicians care about the customer."

George L on September 2024

Greenwood Heating and Home Services is your one stop shop for all your mechanical needs, Heating, Air Conditioning, Electrical and Plumbing. We do it all! Repair, replace or maintain, all with our 100% Customer Satisfaction Guarantee. We have operated for over 100 years in the Greater Seattle area, and we locally owned and operated. Our team follows our Core Values of, Pride, Professionalism, Communication, Safety and Integrity. We focus on training our technicians to do things right the first time in our state of the art Training Center in Tukwila. When we complete the work in your home “You’ll Never Want to Leave the Comfort of Home!”

"We went with Greenwood because we heard that they would take care of us, even though they were more expensive. We had a great experience with the first walkthrough with a knowledgable expert, but every interaction since has been poor. We had several issues with the installation; they had to come back several times. Five years later, the water pump with the furnace broke and they take care of it, but it costs $900. They take care of us, but continue to be expensive. I highly recommend avoiding this company and finding a business that knows what their doing and where all technicians care about the customer."

George L on September 2024

Avatar for Day & Nite Plumbing & Heating, Inc.

Day & Nite Plumbing & Heating, Inc.

16614 13th Ave W
4.30(
214
)
•Approved Pro

Day & Nite Plumbing & Heating, Inc.

16614 13th Ave W
4.30(
214
)
•Approved Pro
Customers say: Super punctual
57 local quotes requested
71 years of experience

Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.

"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."

Bert C on June 2025

Your local Family owned & operated Plumbing, Heating, and Cooling Company since 1954. OUR MISSION: "Dedicated to providing the highest quality, most professional services for your home and business with unsurpassed Value, Innovation, and Integrity." As a Factory Authorized Bryant Dealer, we are proud to offer the latest in innovation and technology when it comes to to comfort in your home. Not only do we work on all brands of Furnaces, A/C, Heat Pumps, & Boilers we also can design the best solution for your home and family when it comes time to replace your equipment. Our Plumbing division is just as innovative. From simple repairs to complete repipes. We also offer the latest in technology when it comes to designing the best solution for the needs of your home. With weekly training weather its a repair, drain cleaning, tankless water heater or replacing a water line without digging a trench our technicians are prepared to offer the right solution. Check us out at the Better Business Bureau and visit our website at www.dayandnite.net.

"Very expensive and overprice, just to change an Outdoor Garden Faucet that cost $32 at Home Depot, I paid $694.99, this is what you call HIGHWAY ROBBERY."

Bert C on June 2025

Avatar for Glendale Heating & Air Conditioning

Glendale Heating & Air Conditioning

12462 Des Moines Memorial Dr
4.81(
128
)
•Approved Pro

Glendale Heating & Air Conditioning

12462 Des Moines Memorial Dr
4.81(
128
)
•Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
80 local quotes requested

Glendale Heating and Air Conditioning is located in Burien, Washington and proudly serves Greater King County. We are a third-generation family business that has served the Northwest since 1938. At Glendale Heating and Air Conditioning we are always there when you need us and we are prompt, efficient and reliable.

"WORK WENT VERY SMOOTH. TECH. WAS VERY INFORMATIVE."

Floyd S on May 2025

Glendale Heating and Air Conditioning is located in Burien, Washington and proudly serves Greater King County. We are a third-generation family business that has served the Northwest since 1938. At Glendale Heating and Air Conditioning we are always there when you need us and we are prompt, efficient and reliable.

"WORK WENT VERY SMOOTH. TECH. WAS VERY INFORMATIVE."

Floyd S on May 2025

Avatar for Smart Electric, Heating & Air

Smart Electric, Heating & Air

11411 51st Ave SE
4.94(
64
)
•Approved Pro

Smart Electric, Heating & Air

11411 51st Ave SE
4.94(
64
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
274 local quotes requested

We are a family-owned and operated business dedicated to the highest standards of workmanship, safety, and customer service. We specialize in home remodels, new construction, knob-and-tube rewires, smart home automation, generator installation, as well as general home electrical needs. We have extensive experience in helping our customers design home electrical layouts and features to best meet their needs and budgets. No job is too big or small for our team - we just love what we do!

"This is hands down the only electrical/hvac company you need in your phone. Easiest, most efficient owner and teams you will find in the Seattle area hands down. Been working with these guys for 7 years, each project we tackle is actually fun because they make it so easy!"

Jordan R on February 2025

We are a family-owned and operated business dedicated to the highest standards of workmanship, safety, and customer service. We specialize in home remodels, new construction, knob-and-tube rewires, smart home automation, generator installation, as well as general home electrical needs. We have extensive experience in helping our customers design home electrical layouts and features to best meet their needs and budgets. No job is too big or small for our team - we just love what we do!

"This is hands down the only electrical/hvac company you need in your phone. Easiest, most efficient owner and teams you will find in the Seattle area hands down. Been working with these guys for 7 years, each project we tackle is actually fun because they make it so easy!"

Jordan R on February 2025

Avatar for Air Masters Inc

Air Masters Inc

1340 Lumsden Rd
4.71(
165
)
•Approved Pro

Air Masters Inc

1340 Lumsden Rd
4.71(
165
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
64 local quotes requested

Air Masters Heating has been installing and servicing furnaces, heat pumps, air conditioners, air cleaners, humidifiers, ductless heat pumps, and HVAC systems in residential, commercial, and new construction applications since 1986. Locally owned & operated by Mark & Rosemarie Timmerman since 1986. Air Masters Heating offers Heating & Cooling Service, Energy Saving Preventive Maintenance, and 24 Hour Emergency Service through their highly trained Service Department. Air Masters Heating provides service to Port Orchard, Bremerton, Silverdale, Poulsbo, Bainbridge Island, Kingston, Belfair, Gig Harbor, Tacoma, and neighboring communities.

"Everything went fine, they even came in a year later to make sure the system was still working well. Very happy with job performance."

Alice L on May 2021

Air Masters Heating has been installing and servicing furnaces, heat pumps, air conditioners, air cleaners, humidifiers, ductless heat pumps, and HVAC systems in residential, commercial, and new construction applications since 1986. Locally owned & operated by Mark & Rosemarie Timmerman since 1986. Air Masters Heating offers Heating & Cooling Service, Energy Saving Preventive Maintenance, and 24 Hour Emergency Service through their highly trained Service Department. Air Masters Heating provides service to Port Orchard, Bremerton, Silverdale, Poulsbo, Bainbridge Island, Kingston, Belfair, Gig Harbor, Tacoma, and neighboring communities.

"Everything went fine, they even came in a year later to make sure the system was still working well. Very happy with job performance."

Alice L on May 2021

Avatar for Allred Heating Cooling Electric

Allred Heating Cooling Electric

505 F St SE
4.74(
132
)
•Approved Pro

Allred Heating Cooling Electric

505 F St SE
4.74(
132
)
•Approved Pro
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
173 local quotes requested

We at Allred Heating, Cooling and Electrical hope to become your trusted friends and partners in keeping your homes safe, comfortable, and a pleasant environment for you and your families. How Allred Got Started Our company was founded by Dan and Matt who discovered they had complimentary areas of expertise. Matt began as an electrician about a decade ago and besides doing electrical work began working with HVAC as well. Dan had been doing contractor work in Alaska and when they met they realized they were a perfect match to begin a business, hence Allred Heating, and Cooling and Electrical. Between the two of them all of the right bases were covered to offer complete electrical and HVAC systems, both installation and repair. Allred Heating Family Hopes to Help Your Family We are a family owned company and we know how important it is to keep our homes working economically and safely. We hold ourselves and our work to the highest standards and that is why we offer a one year parts and labor guarantee. We are bonded, licensed and insured to and we’d like to show you why you can have the utmost confidence in us. We will give you upfront estimates so you’ll know what your bottom line will be.

"I recommended AllRed to my mother, they told her that they would give her a 10% discount on the phone when she called. They only gave her a 5% discount, they also didn't provide any information about the system? No information was provided also about health of system or checkpoint system used; (PSI of freon, lubrication, filters, drain lines, etc) When I called up Allred and asked for them to provide the 10% discount like they promised they said they would, and she would see it on her Credit Card. A couple of weeks went by and nothing. I called again, they apologized and said they would follow up ensure that the service team sent the information to us and provided the discount and called me back directly. After another week, NOTHING! While the work was completed successfully. The communication and follow up of this company are terrible to say the least. I wouldn't recommend Allred to anyone, or trust them at all :-("

Justin H on December 2024

We at Allred Heating, Cooling and Electrical hope to become your trusted friends and partners in keeping your homes safe, comfortable, and a pleasant environment for you and your families. How Allred Got Started Our company was founded by Dan and Matt who discovered they had complimentary areas of expertise. Matt began as an electrician about a decade ago and besides doing electrical work began working with HVAC as well. Dan had been doing contractor work in Alaska and when they met they realized they were a perfect match to begin a business, hence Allred Heating, and Cooling and Electrical. Between the two of them all of the right bases were covered to offer complete electrical and HVAC systems, both installation and repair. Allred Heating Family Hopes to Help Your Family We are a family owned company and we know how important it is to keep our homes working economically and safely. We hold ourselves and our work to the highest standards and that is why we offer a one year parts and labor guarantee. We are bonded, licensed and insured to and we’d like to show you why you can have the utmost confidence in us. We will give you upfront estimates so you’ll know what your bottom line will be.

"I recommended AllRed to my mother, they told her that they would give her a 10% discount on the phone when she called. They only gave her a 5% discount, they also didn't provide any information about the system? No information was provided also about health of system or checkpoint system used; (PSI of freon, lubrication, filters, drain lines, etc) When I called up Allred and asked for them to provide the 10% discount like they promised they said they would, and she would see it on her Credit Card. A couple of weeks went by and nothing. I called again, they apologized and said they would follow up ensure that the service team sent the information to us and provided the discount and called me back directly. After another week, NOTHING! While the work was completed successfully. The communication and follow up of this company are terrible to say the least. I wouldn't recommend Allred to anyone, or trust them at all :-("

Justin H on December 2024

Avatar for AAA Heating & Air Conditioning

AAA Heating & Air Conditioning

22641 83rd Ave S
4.81(
227
)
•Approved Pro

AAA Heating & Air Conditioning

22641 83rd Ave S
4.81(
227
)
•Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
87 local quotes requested

We’ve Got Experience On Our Side! Our technicians have top level training and are EPA certified. It doesn’t get any better than that. You can bank on our technical expertise to solve just about any problem. We’ve heard and seen it all. Award winning. Additional DBA - AAA Heating & AC Inc. Financing AOC.

"Aside from a hiccup around scheduling some ancillary repairs the quoted price was reasonable and the work was done to spec."

Brandon N on January 2025

We’ve Got Experience On Our Side! Our technicians have top level training and are EPA certified. It doesn’t get any better than that. You can bank on our technical expertise to solve just about any problem. We’ve heard and seen it all. Award winning. Additional DBA - AAA Heating & AC Inc. Financing AOC.

"Aside from a hiccup around scheduling some ancillary repairs the quoted price was reasonable and the work was done to spec."

Brandon N on January 2025

Avatar for Envirosmart Solution Inc

Envirosmart Solution Inc

330 SW 43rd Street Suite K267
5.00(
1
)
•Approved Pro

Envirosmart Solution Inc

330 SW 43rd Street Suite K267
5.00(
1
)
•Approved Pro
21 years of experience
Free onsite estimate

We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.

We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.

Avatar for AireServ of Kitsap County

AireServ of Kitsap County

3500 Anderson Hill Rd. Unit 202
5.00(
2
)
•Approved Pro

AireServ of Kitsap County

3500 Anderson Hill Rd. Unit 202
5.00(
2
)
•Approved Pro
41 local quotes requested
1 years of experience

AireServ of Kitsap County is proud to be a locally and veteran-owned business. Since opening our doors, we have built our company on providing customers with the highest quality products and service at a fair price. From installation and replacement to service and repair, our customers know that they can count on us to provide the highest quality products and service at a fair price. Let us show you why AireServ customers become customers for life, get in touch today! -Veteran Owned Business -24/7 Emergency Calls Available

"The install team was quick and efficient. It took them about 4.5 hours, start to finish, which was far quicker than I thought it would take. They left the area clean and the install looks very professional. Unit works great; it was 90 degrees the day after the install and the unit did its job and kept the house cool."

Tammie D on July 2025

AireServ of Kitsap County is proud to be a locally and veteran-owned business. Since opening our doors, we have built our company on providing customers with the highest quality products and service at a fair price. From installation and replacement to service and repair, our customers know that they can count on us to provide the highest quality products and service at a fair price. Let us show you why AireServ customers become customers for life, get in touch today! -Veteran Owned Business -24/7 Emergency Calls Available

"The install team was quick and efficient. It took them about 4.5 hours, start to finish, which was far quicker than I thought it would take. They left the area clean and the install looks very professional. Unit works great; it was 90 degrees the day after the install and the unit did its job and kept the house cool."

Tammie D on July 2025

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FAQs for central humidifier installation and replacement projects in Seattle, WA

Aim for indoor humidity between 30% and 50%, with the sweet spot around 45%. That range keeps mold, dust mites, and musty odors in check while protecting drywall and woodwork. Staying in the zone also helps your HVAC system run more efficiently and supports healthier air for you and your family year-round, during hot summers and cold winter months.

With routine filter changes and coil cleanings, most whole-house units run for eight to 15 years. Heavy use, poor air quality, or bargain-bin equipment can shorten that span, while a well-maintained, high-quality model often makes it to the upper end of the range. Ask your installer about recommended service intervals to get the most mileage from your investment.

It depends on your climate. Homes in cold, dry regions can often shut the dehumidifier off once winter sets in. If you live in a warm, humid area—or your house tends to trap moisture—you may need to keep it running year-round. Use a simple hygrometer: if readings stay below 50%, give the unit a rest. Just remember to restart it when humidity climbs again to avoid mold and condensation.

Dry air feels cooler, so your AC doesn’t have to work as hard. By stripping out excess moisture, the dehumidifier lets you raise the thermostat a few degrees without losing comfort. A shorter AC runtime reduces electricity use and can shave a noticeable amount off your summer power bill. Energy-efficient models further enhance those savings.

If your home is under about 2,000 square feet, a well-placed portable unit can handle the load. Just remember they’re less efficient and need hands-on upkeep—think emptying tanks and cleaning filters. If you prefer set-and-forget convenience or plan to expand your living space, a whole-house model still offers better long-term comfort and lower energy use per square foot.

The Seattle, WA homeowners’ guide to central humidifier installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.

See all articles
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