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Find Central humidifier installers and replacers in Middletown

F.H. Furr Plumbing Heating & Air Conditioning Inc

4.33(
15
)
Approved Pro

F.H. Furr Plumbing Heating & Air Conditioning Inc

4.33(
15
)
Approved Pro
Customers say: Super punctual
190 local quotes requested
44 years of experience

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Nice, reliable, and responded immediately."

Ethan Q on January 2025

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

"Nice, reliable, and responded immediately."

Ethan Q on January 2025


Avatar for TriState Home Services

TriState Home Services

4.73(
181
)
Approved Pro

TriState Home Services

4.73(
181
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
216 local quotes requested

If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.

"Great service very prompt and easy to work with."

Randy W on May 2025

If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.

"Great service very prompt and easy to work with."

Randy W on May 2025


Avatar for Holtzople Heating, Air Conditioning, & Electrical Services

Holtzople Heating, Air Conditioning, & Electrical Services

4.94(
176
)
Approved Pro

Holtzople Heating, Air Conditioning, & Electrical Services

4.94(
176
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
25 local quotes requested

Holtzople is a leading HVAC company in Frederick, Carroll, and Washington counties in Maryland, as well as Adams and small parts of Franklin & York counties in Pennsylvania, featuring all the top brands in the Heating and Cooling industry, such as Trane, Bryant, Lennox, Carrier, ClimateMaster, WaterFurnace, and more. We recently added an electrical department to our services, making us your one-stop shop for HVAC and electrical needs. Quality is Not Expensive, It's Priceless!

"Happy Holidays all! Please use my Holtzople (H) review to help you address your HVAC needs! Last summer, my Trane AC unit failed. Corey W (H) was the tech that came out to the house and troubleshooted/resolved the problem (leaking refrigerant). He also advised on probability of future repairs. Sadly, the unit performed well for only a short time before failing. It was time to consider my options. Repairs were becoming more frequent and costly. Tyler (H System Designer) visited and walked around my house inspecting my current HVAC system. We discussed repairing or replacing my ailing AC unit. He recommended replacing with a split ductless system and emailed a quote for 1. Enhanced Mitsubishi hyper heat mini split system (system) 2. Favorable financing options - low interest rates and affordable monthly payments. The install took a week. H’s crew arrived each morning, respected my property, and worked as a team to carefully install the new system. With gratitude, John"

John M on November 2025

Holtzople is a leading HVAC company in Frederick, Carroll, and Washington counties in Maryland, as well as Adams and small parts of Franklin & York counties in Pennsylvania, featuring all the top brands in the Heating and Cooling industry, such as Trane, Bryant, Lennox, Carrier, ClimateMaster, WaterFurnace, and more. We recently added an electrical department to our services, making us your one-stop shop for HVAC and electrical needs. Quality is Not Expensive, It's Priceless!

"Happy Holidays all! Please use my Holtzople (H) review to help you address your HVAC needs! Last summer, my Trane AC unit failed. Corey W (H) was the tech that came out to the house and troubleshooted/resolved the problem (leaking refrigerant). He also advised on probability of future repairs. Sadly, the unit performed well for only a short time before failing. It was time to consider my options. Repairs were becoming more frequent and costly. Tyler (H System Designer) visited and walked around my house inspecting my current HVAC system. We discussed repairing or replacing my ailing AC unit. He recommended replacing with a split ductless system and emailed a quote for 1. Enhanced Mitsubishi hyper heat mini split system (system) 2. Favorable financing options - low interest rates and affordable monthly payments. The install took a week. H’s crew arrived each morning, respected my property, and worked as a team to carefully install the new system. With gratitude, John"

John M on November 2025


Avatar for MARYLAND HEATING & COOLING

MARYLAND HEATING & COOLING

4.94(
89
)
Approved Pro

MARYLAND HEATING & COOLING

4.94(
89
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
14 local quotes requested

Welcome to Maryland Heating & Cooling, a family-owned & operated business located in Ellicott City, MD. With over 25 years in business, we are very proud to be recognized as one of the top-rated HVAC professionals in Howard County and surrounding areas. With a commitment to customer satisfaction, our team of skilled licensed technicians are dedicated in providing you with reliable heating and cooling solutions. We specialize in system replacement, repairs, maintenance and indoor air quality products. Along with our service, you can always count on Maryland Heating & Cooling to provide you with quick service, fair pricing and an honest evaluation of your HVAC system. We look forward to helping you with your HVAC needs.

"Couldn't be more pleased. Quick to respond, great communication and super friendly and professional service. Highly recommend"

Edward C on August 2025

Welcome to Maryland Heating & Cooling, a family-owned & operated business located in Ellicott City, MD. With over 25 years in business, we are very proud to be recognized as one of the top-rated HVAC professionals in Howard County and surrounding areas. With a commitment to customer satisfaction, our team of skilled licensed technicians are dedicated in providing you with reliable heating and cooling solutions. We specialize in system replacement, repairs, maintenance and indoor air quality products. Along with our service, you can always count on Maryland Heating & Cooling to provide you with quick service, fair pricing and an honest evaluation of your HVAC system. We look forward to helping you with your HVAC needs.

"Couldn't be more pleased. Quick to respond, great communication and super friendly and professional service. Highly recommend"

Edward C on August 2025


Avatar for GAC Services

GAC Services

4.80(
279
)
Approved Pro

GAC Services

4.80(
279
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
454 local quotes requested

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025


Avatar for Glenmont Heating & A/C

Glenmont Heating & A/C

4.66(
61
)
Approved Pro

Glenmont Heating & A/C

4.66(
61
)
Approved Pro
Customers say: Super punctual
27 local quotes requested
41 years of experience

Since 1984, Glenmont HVAC has been dedicated to treating every customer like family. As a long-standing local company, we’ve built our reputation on integrity, craftsmanship, and dependable service. From quick repairs to full system installations, our certified team provides comfort solutions designed for long-term peace of mind.

"Not Recommended for Thermostat Replacement — Unreasonable and Unfair $700 Charge I do not recommend Glenmont Air Conditioning & Heating for thermostat replacement work. I was charged $700 for a simple thermostat replacement, which I believe was unreasonably high and unfair. I was under the impression that the quoted estimate represented the maximum expected cost only if the technician had to perform additional wiring or complex installation work. If you want to install an Ecobee or any other type of thermostat, you can simply YouTube the installation, which provides step-by-step instructions on how to unwire, label, and rewire to the new thermostat. For my installation, I was under the impression that additional wiring might be needed, but it turned out to be a straightforward swap of the old thermostat with a new Ecobee unit, a process that took only about 15 minutes. Despite that, I was still charged the full amount. The Ecobee Premium thermostat itself costs around $250, meaning they charged nearly $500 just for labor, regardless of how simple or quick the installation is. To make matters worse, the installation only comes with a 30-day warranty, which hardly justifies such a high price. I tried to communicate and explain that this charge was unreasonably high and unfair, but they simply said, “It is what it is.” If you’re considering a thermostat installation, I strongly suggest hiring a professional through Thumbtack, where qualified experts can do the same job for under $150 with transparent pricing and good service. I expected fairness, honesty, and reasonable pricing from Glenmont, but unfortunately, that was not my experience."

Soheil R on October 2025

Since 1984, Glenmont HVAC has been dedicated to treating every customer like family. As a long-standing local company, we’ve built our reputation on integrity, craftsmanship, and dependable service. From quick repairs to full system installations, our certified team provides comfort solutions designed for long-term peace of mind.

"Not Recommended for Thermostat Replacement — Unreasonable and Unfair $700 Charge I do not recommend Glenmont Air Conditioning & Heating for thermostat replacement work. I was charged $700 for a simple thermostat replacement, which I believe was unreasonably high and unfair. I was under the impression that the quoted estimate represented the maximum expected cost only if the technician had to perform additional wiring or complex installation work. If you want to install an Ecobee or any other type of thermostat, you can simply YouTube the installation, which provides step-by-step instructions on how to unwire, label, and rewire to the new thermostat. For my installation, I was under the impression that additional wiring might be needed, but it turned out to be a straightforward swap of the old thermostat with a new Ecobee unit, a process that took only about 15 minutes. Despite that, I was still charged the full amount. The Ecobee Premium thermostat itself costs around $250, meaning they charged nearly $500 just for labor, regardless of how simple or quick the installation is. To make matters worse, the installation only comes with a 30-day warranty, which hardly justifies such a high price. I tried to communicate and explain that this charge was unreasonably high and unfair, but they simply said, “It is what it is.” If you’re considering a thermostat installation, I strongly suggest hiring a professional through Thumbtack, where qualified experts can do the same job for under $150 with transparent pricing and good service. I expected fairness, honesty, and reasonable pricing from Glenmont, but unfortunately, that was not my experience."

Soheil R on October 2025


Avatar for Harrell's Services

Harrell's Services

5.00(
4
)
Approved Pro

Harrell's Services

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004

We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004


"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."

Wei X on July 2023

McCrea is a family owned business that has served our area since 1936. Financing and rebates are available on Trane systems installed by McCrea. Resistrictions apply and these are limited time offers call for details. "Its hard to stop a Trane"

"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."

Wei X on July 2023


Avatar for JK Moving Services

JK Moving Services

4.49(
76
)

JK Moving Services

4.49(
76
)
Customers say: Super punctual
44 years of experience

JK Moving Services is your trusted local residential moving expert in Maryland, Virginia, and Washington DC. For over 40 years we've made moving your home quick, easy, and stress-free. Whether it's local, long-distance, or international, JK backs each move with our brand promise to treat each and every customer with care and respect. When you move, you’re packing up more than just “stuff.” You’re packing everything that makes your house a home. Across town, the state, or the country - we’ll help you get it there safely.

"JK uses a virtual estimate to provide a quote. That's a trick! It's common that the price they quote is a lot lower than what you WILL HAVE to pay to get your stuff. The process was easy, but can say the estimate we received to move across the country was $5,000 higher than 2 large PODs to start. In the end, they ended up adding almost $8,000...b/c they quoted the incorrect weight to start, as well as charging for a smaller truck that we never requested. The moving company that did the physical part, wasn't JK, and they were hard, polite, and great workers! I reached out and begged JK to help with the major increase (added 65% more to the total...and that was NOT budgeted in whatsoever! After numerous requests for ANY $ help, we were told simply "No." I worked with the physical moving company and they offered to help with some of the expenses...JK, Nope, Nadda, & basically told me TOO D*** BAD! DON'T USE THEM FOR ANY QUOTES!"

STEVEN M on November 2024

JK Moving Services is your trusted local residential moving expert in Maryland, Virginia, and Washington DC. For over 40 years we've made moving your home quick, easy, and stress-free. Whether it's local, long-distance, or international, JK backs each move with our brand promise to treat each and every customer with care and respect. When you move, you’re packing up more than just “stuff.” You’re packing everything that makes your house a home. Across town, the state, or the country - we’ll help you get it there safely.

"JK uses a virtual estimate to provide a quote. That's a trick! It's common that the price they quote is a lot lower than what you WILL HAVE to pay to get your stuff. The process was easy, but can say the estimate we received to move across the country was $5,000 higher than 2 large PODs to start. In the end, they ended up adding almost $8,000...b/c they quoted the incorrect weight to start, as well as charging for a smaller truck that we never requested. The moving company that did the physical part, wasn't JK, and they were hard, polite, and great workers! I reached out and begged JK to help with the major increase (added 65% more to the total...and that was NOT budgeted in whatsoever! After numerous requests for ANY $ help, we were told simply "No." I worked with the physical moving company and they offered to help with some of the expenses...JK, Nope, Nadda, & basically told me TOO D*** BAD! DON'T USE THEM FOR ANY QUOTES!"

STEVEN M on November 2024


Avatar for Auto Transport - United Freight Of America

Auto Transport - United Freight Of America

4.84(
920
)

Auto Transport - United Freight Of America

4.84(
920
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

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FAQs for central humidifier installation and replacement projects in Middletown, MD

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 Middletown, MD 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.