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Best boiler repair pros near Poolesville, MD

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TRUSTED BY POOLESVILLE, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon3.7k+
    Verified boiler repairs reviews

Top-Rated Boiler repair pros in Poolesville - Updated Nov 2026

Avatar for Petro Home Services
Petro Home Services
4.4(
1,786
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Poolesville, MD and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

"Arizona Rug Co. recently completed cleaning and restoring our rugs for us and we could not be more impressed with the quality of their work. The older and larger of the rugs no longer looks 42 years old. I recommend, as a designer, taking care of quality rugs in order to enjoy them fully. It also needs to be said that this company has a varied selection of rugs available from the well stocked showrooms, both in Tempe and Scottsdale, with knowledgeable sales staff."
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Response time6 days
Response rate100%
18 neighbors recently requested a quote
Avatar for JDL HVAC & Plumbing Services
JDL HVAC & Plumbing Services
4.5(
120
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Repair or ServiceElectric Boiler or Radiator Heating System - Install+5 more

Serving Poolesville, MD and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"I had a great experience with JDL. They were able to come out the next day to repair my furnace. The technician, Ire, was very professional, easily diagnosed the problem, and made the repairs right away. He also demonstrated to me that the problem was fixed and made sure that I could perform basic maintenance going forward. I highly recommend JDL."
Navien Tankless 2023
Navien Tankless 2023
Navien Tankless 2023
Navien Tankless 2023
18 SEER Infinity Heat Pump

+73

Response time8 hrs
Response rate100%
15 neighbors recently requested a quote
Avatar for Comfort Heating and Cooling
Comfort Heating and Cooling
4.5(
10
)
Gas Boiler or Radiator Heating System - RepairElectric Boiler or Radiator Heating System - Repair

Serving Poolesville, MD and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"When our boiler went out in the middle of a snowstorm, Troy came to our rescue! Incredibly professional and kind - especially given the terrible weather, he arrived quickly, diagnosed the problem almost immediately, replaced the board and restored our heat! All of this at a very reasonable price! Troy- thank, thank you, thank you! Needless to say, Troy has permanent customers- we can’t recommend him more highly!"
Response time1 day
Response rate88%
17 neighbors recently requested a quote
Avatar for American home services
American home services
4.8(
120
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Poolesville, MD and surrounding areas

In business since 2005

Free estimates

Warranties offered

"I'd been experiencing allergy concerns and decided to have an air quality test performed for mold primarily in my home. Sometimes the air in my home, seems to cause my nose to run and eyes become somewhat irritated. The gentlemen, first listened to all my concerns and gave me some suggestions, due to another problem I was experiencing in my attic.  He looked in my attic and gave a few suggestions to correct a problem there. He said that he too noticed some nasal irritation in the air, as well. I wanted to first start by ruling out  MOLD, as the problem. He did not pressure me in performing an air test, at all. It was totally my decision and we both agreed that at least I would know whether to rule mold out or remediate a mold problem, if necessary. So I gave him my consent to conduct an air quality test. He said that he would conduct it on the inside ( top level hall area) and outside ( front of garage) to compare results. Two sample vials with air samples from the two locations were collected using a machine with free standing stand.  He left and assured me that he would physically  deliver the two samples that evening to an outside facility for a diagnostic analysis and said that I'd get the results on Tuesday, via email.  On Tuesday, I did receive the results, which showed that I had no MOLD. However, it did show that I had something in the air which could explain the symptoms I'd been experiencing. The report was very detailed and pretty easy to read and comprehend. I also called their office and a woman pulled up my results and reassured me that there was not a Mold problem. He left his card, should I need further service and he would quote an estimate,should I use his service for the attic problem. He was very professional, polite, and very attentive to my situation.
"
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+25

Recommended by97%of homeowners
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Boiler Repair FAQs, answered by experts

It’s not customary to tip HVAC technicians, and most professionals won’t expect it. However, it’s a nice way of showing your appreciation for the work they do, especially if they come out in inclement weather or on a weekend or holiday to fix an emergency issue if your heat or AC goes out in extreme temperatures. A good tip would be between 10% to 20% of the total bill, depending on how above and beyond the tech goes for your repair and on the total cost of your HVAC repair or service. For something like a routine tune-up or scheduled maintenance, tips aren’t expected.

If you hire a professional to replace your gas furnace’s thermocouple, you’ll usually pay between $150 and $250. Since thermocouples often fail due to a lack of maintenance, you may be able to avoid—or at least delay—a thermocouple replacement by taking good care of your furnace. This means scheduling annual furnace inspections, changing the filters at least once per season, and cleaning the burners occasionally.

There are a couple of signs that will tell you it’s time to bleed the radiator. If the radiator is making noises, it’s typically because of trapped air, which you can release by bleeding the radiator. You can also test the radiator by turning on your heat and then placing your hand near the top and bottom of the radiator. If you feel cold spots, particularly at the top of the radiator, it’s time to bleed it.

Most HVAC companies charge a flat service call fee of between $75 and $150, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around $150. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.

To maintain a boiler and ensure it works optimally, regularly read the temperature and pressure gauges on the unit to ensure they're within the limits described in your owner's manual. Lubricate the circulating pump according to the manufacturer's instructions. Check the water level in the expansion tank and open the tank valve to drain it if it's more than half full.

The Poolesville, MD homeowners’ guide to boiler repairs

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