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Best heating and air conditioning pros near Loudon, NH

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TRUSTED BY LOUDON, NH HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon55
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Loudon - Updated Nov 2026

Avatar for CRS Heating and Cooling, Inc.
CRS Heating and Cooling, Inc.
4.9(
72
)
Ductless Mini-split A/C - Install or ReplaceCentral A/C - InstallDuctless Mini-split Heating System - Install or Replace+7 more

Serving Loudon, NH and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"For 4 years we have been unable to get an HVAC specialist to come to our house to address an interior unit leak and those that did come prior could not figure it out. Frustrated, I reached out to Home Advisor and the next day CRS was at our home. They reviewed the situation, contacted the manufacturer and found that an original part had been discarded in installation which was likely causing the leak. A couple days after their first visit - our only first floor a/c was working beautifully (after its installation 6 years ago!). CRS was quick to address, innovative in approach, went the extra mile, professional, and reasonably priced. We couldn't be happier that CRS was able to help us with this longstanding problem."
Response time7 hrs
Response rate86%
1 neighbors recently requested a quote
Avatar for Everclean Air LLC
Everclean Air LLC
4.8(
44
)
Air Ducts & Vents - Clean

Serving Loudon, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I wanted to clean a second floor dryer vent hose that was loaded solid with lint. It was worse than I thought! Packed solid! It became evident that this was a messy and dangerous situation as it was a fire hazard. Through Angi I found Everclean and the co. was a perfect fit. HVAC companies don’t do dryer vents. Justin from Everclean was awesome and got the problem straightened out. He even discovered the dryer vent had become disconnected from outside dryer vent door! I can’t fit through the narrow attic hatchway as my shoulders are a bit too wide, so I depended on Justin. Finally, everything is buttoned up, and our clothes now dry in half the time. Cost was moderate and was money well invested. Dryer vent fire danger is now negligible compared to before. Along with neighbor hatred danger. I would hire Everclean again if needed again."
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+2

Response time7 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
89
)
Ducts & Vents - Install or ReplaceBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Loudon, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"Palmer Gas & Oil just did an entire replacement of the 20-year-old central HVAC + humidifier + thermostats two-zone system in my home with a new state-of-the-art total system and I could not be more pleased. From start to finish each employee was personable, extremely knowledgeable, very courteous, and the consummate professional. There is truth to the adage that you get what you pay for and I know I got the best. All Gold Stars!"
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+11

1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Action Plumbing Heating And Air
Action Plumbing Heating And Air
4.9(
92
)
Gas Furnace / Forced Air Heating System - RepairOil Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+23 more

Serving Loudon, NH and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

Action Plumbing, Heating, and Air provides prompt and reliable services to homeowners and businesses. We are fully licensed, bonded, and insured and able to repair or replace any plumbing or heating fixture inside or outside of your home or business. We stand behind our products and services by installing only quality materials and hiring only state licensed plumbers. At Action, we pride ourselves on practicing the highest standards in the business to ensure our customers are provided the best service possible. Take Action against your plumbing or heating problems and call Action! (833) 732-2288

Response time1 day
Response rate89%
19 neighbors recently requested a quote
Wentworth Duct Cleaning, LLC
4.9(
53
)
Air Ducts & Vents - Clean

Serving Loudon, NH and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: True professional

"Gary and Tina went well beyond my expectations. From a detailed explanation of the job upfront including pricing and finding a break in the duct work after they began the job. They visited 3 times (about 3 hrs r/t each visit) waiting for a hvac company to repair the duct work so they could perform the work previously detailed. Very professional, meticulous in their work and the house was as clean when they left as when they arrived. I will without hesitation call on them to perform their service in the future."
Response time1 day
Response rate95%
2 neighbors recently requested a quote
Avatar for Barrington Solutions Plumbing & Heating LLC
Barrington Solutions Plumbing & Heating LLC
4.9(
17
)
Gas Furnace / Forced Air Heating System - RepairCentral A/C - InstallGas Boiler or Radiator Heating System - Install+4 more

Serving Loudon, NH and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

Barrington Solutions is the premier plumbing and HVAC specialist for new construction and major residential builds throughout New Hampshire's Lakes Region. Built on a foundation of elite technical expertise, strict project timelines, and clear communication, we partner with builders, contractors, and homeowners to engineer and install flawless mechanical systems from the ground up.While we provide full-service plumbing, high-efficiency heating, and advanced cooling solutions for existing properties, our true passion and specialty lie in rough-in plumbing, complete system design, and the seamless integration of modern heat pumps, boilers, and mini-splits for new homes. We treat every job site with total professionalism, ensuring your project stays on schedule, on budget, and up to code. Contact Barrington Solutions today to bring top-tier mechanical craftsmanship to your next build.

Granite Ridge
Brook hill development
Sanborton
Derry
2.5 bathroom modular

+39

41 neighbors recently requested a quote
Avatar for CRS Mechanical, LLC
CRS Mechanical, LLC
4.7(
15
)
Oil Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - RepairGas Furnace / Forced Air Heating System - Repair+13 more

Serving Loudon, NH and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

With over 8 years of HVAC experience, CRS Mechanical, LLC is the company you want to use. We make sure our customers are completely satisfied when we finish each job. We do residential and commercial. Call us today for your free estimate within 20 miles!

UNH Gables
UNH Gables
RTU Install
Furnace
Commercial Restaurant

+9

Response time8 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

Yes, you can potentially save $60 to $200 by handling your own air conditioner capacitor installation. However, capacitor replacement comes with the risk of electric shock. Only attempt this if you have the knowledge and protective gear to carry it out safely. Otherwise, we recommend hiring an HVAC pro with the experience to properly diagnose the issue and avoid damaging other parts of your AC unit.

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.

A blocked return air vent can cause your HVAC system to work much harder and, therefore, less efficiently. The result is higher utility bills and poorer air quality. A blocked return air vent can also cause unpleasant dust, dander, and odors to linger in your home’s air.

While "dry" mode on your AC can help reduce humidity levels to some extent, it may not be as effective as a dedicated dehumidifier, especially in areas with extremely high humidity or larger spaces. Dehumidifiers are specifically designed to remove moisture from the air more efficiently, making them a better choice for tackling persistent humidity issues.

The Loudon, NH homeowners’ guide to heating and air conditioning services

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