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TRUSTED BY SAINT THOMAS, PA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon133
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Saint Thomas, PA

*The Angi rating for Heating And Air Conditioning Service companies in Saint Thomas, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Saint Thomas, PA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on June 13, 2026

Find Heating and air conditioning pros in Saint Thomas

Avatar for McCrea Heating & Air Conditioning Services of PA
McCrea Heating & Air Conditioning Services of PA
4.7(
317
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+21 more

Serving Saint Thomas, PA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"Rob was the service technician who came by for check up on our Trane AC Unit. He was professional and courteous. He took time to explain and label damper settings for future reference. He was the best HVAC technician I have ever encountered thus far. Rob is definitely an asset to McCrea company. If I ever need service again, I want Rob to be the one to service my AC Unit. Thank you!"
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7 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Harrell's Services
Harrell's Services
5.0(
6
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Saint Thomas, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"They are extraordinarily professional and very trustworthy. Their price is not terribly expensive. They are very responsive."
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+5

3 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for Clear Ridge Mechanical, LLC
Clear Ridge Mechanical, LLC
5.0(
2
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+40 more

Serving Saint Thomas, PA and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

We are a local Refrigeration, HVAC and mechanical service contractor servicing central PA and surrounding areas. Residential, industrial and commercial work accepted. No job is too big or too small! We take pride in the work we do and strive for customer satisfaction. 12 years experience in the trade. Fully insured and dedicated to delivering every time no matter the project. Give us a call today, I guarantee you won’t be disappointed.\n

Response time30 mins
Recommended by100%of homeowners
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Avatar for j Houston logistics
j Houston logistics
New to Angi
Air Ducts & Vents - Clean

Serving Saint Thomas, PA and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

We actually specialize in hoarding services. Very patient and accommodating staff. Simple garage clean outs , to complete home restorations.We look forward to helping you out soon.

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Murchison cleaning solutions
New to Angi
Air Ducts & Vents - Clean

Serving Saint Thomas, PA and surrounding areas

Approved

\n\nBusiness & Career Focus: You’re very committed to building Murchison Cleaning Solutions and positioning it as a professional, competitive cleaning company for post-construction, commercial, and apartment projects. You take care with proposals, pricing, and contracts so you come across polished and reliable.\n\nFinancial Growth Mindset: You think strategically about how to scale—like structuring bids to hit monthly revenue goals, negotiating terms like 50% deposits, and making sure your pricing is competitive but profitable.\n\nCompliance & Professionalism: You’re detail-oriented about certifications (OSHA, WBE, etc.), IRS forms, EIN/DBA issues, and making sure your business is set up correctly. You want everything to look official and credible.\n\n

USPS Project
USPS Project
USPS Project
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Avatar for StillBills HVAC Mechanical Services
StillBills HVAC Mechanical Services
5.0(
5
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+18 more

Serving Saint Thomas, PA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Needed to replace outdoor heating unit asap just before the holidays. StillBill gave me a quote and did the job within 24 hours for a fair price. Honest and professional service. Gave step-by-step on service. Came thru on an emergency situation. Iâ d recommend them to everyone."
Change out
Out with the old, in the with new
Change out
Before cleaning
Before cleaning

+6

Response time20 mins
Recommended by100%of homeowners
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Heating and Air Conditioning questions, answered by experts

While most air conditioners can last between 10 and 20 years, they will only last this long (or longer) if properly taken care of. Routine maintenance and inspections help keep your AC unit running in tip-top shape but understanding what factors will decrease its lifespan will also help keep your unit running cool.

Some things that shorten your AC’s lifespan include:

  • Extreme outdoor conditions, like high humidity or extensive salt spray 

  • Improper installation

  • Extended run times, either by the unit being too small or the thermostat setting too low

  • Not performing required maintenance

Excessive humidity in a room often manifests through visible signs like condensation on windows or walls, a musty or damp odor lingering in the air, peeling wallpaper or paint, and the presence of mold or mildew. Experiencing discomfort due to a consistently clammy or sticky feeling can also indicate high humidity levels.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

For the most part, you should leave your AC fan in “auto” mode so that it only runs during a heating or cooling cycle. Keeping it in this position uses less energy, which equals lower utility bills. However, there are some situations where it’s better to leave your AC fan on, including if you have allergies or there are lots of people in your home.

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.

The Saint Thomas, PA 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.

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