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  • 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

Dirty filters are almost always the cause of poor airflow, so they should be regularly cleaned and then replaced as needed. The fan blades can also get dirty, so they should be cleaned when the unit is turned off. Make sure that the outdoor area around the back of the unit is unobstructed. Trees, shrubs, trash, and other objects could be too close to your unit.

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

There are ways to detect a refrigerant leak with several different testing methods. However, most homeowners can figure out something’s wrong with their AC unit by noticing these common signs:

  • Ice forming on the evaporator coil

  • Water leaks near the AC unit

  • Frequent hissing sounds

  • Increased electric bills

  • Unit takes longer than usual to cool

  • Unit is blowing hot air

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. 

If your AC suddenly stops working, the first thing to check is your thermostat settings. Ensure the thermostat is set to the appropriate temperature and mode (cooling). Sometimes, a simple adjustment or replacing the batteries in the thermostat can resolve the issue. If that’s not the issue, look to see if the circuit breaker tripped. These basic checks can often identify simple fixes before you need to call for professional assistance.

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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