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*The Angi rating for Heating And Air Conditioning Service companies in Grayville, IL 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 Grayville, IL 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 February 01, 2026

Find Heating and air conditioning pros in Grayville

Next Phase Power LLC
New to Angi
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - RepairThermostat - Install or Replace

Serving Grayville, IL and surrounding areas

Approved

My name is David Michl, and Next Phase Power LLC is built on 20 years of hands-on electrical experience across residential, commercial, and industrial work. From home wiring to underground PVC trenching for services, fuel stations, and farms, I understand how important reliable power is to everyday life.\nProudly serving Jasper County, Effingham, and surrounding communities with dependable service, honest work, and quality craftsmanship. Fully licensed and insured, competitive pricing, and free estimates. Feel free to call or text anytime, and don’t forget to leave a review here or on our Facebook page. Thank you for your support!

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Daniel Wallace
New to Angi
Thermostat - Install or Replace

Serving Grayville, IL and surrounding areas

Approved

I’m a hardworking person who doesn’t like to leave projects half finished or looking sloppy, I can be a bit of a perfectionist. I’ve always fixed and built almost everything I needed myself and I take pride in being self sufficient. I’ve been an electrician for a year and half now and before that I was fabricating aerators for private residences. I have a wife and two children, so I can handle the chaos of a whole house remodel even if you decide to alter any details halfway through.

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Avatar for Danels Heating and Air Conditioning
Danels Heating and Air Conditioning
4.9(
8
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+19 more

Serving Grayville, IL and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"The individual was very knowledgeable about his job and even scheduled me another appointment to come and clean my air conditioning unit outside my house next week."
Response time11 hrs
Recommended by100%of homeowners
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Avatar for Shutt's Heating And Cooling LLC
Shutt's Heating And Cooling LLC
5.0(
11
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Install or Replace+2 more

Serving Grayville, IL and surrounding areas

In business since 2023

Free estimates

Warranties offered

"Does good work for a good price"
Response time2 days
Recommended by100%of homeowners
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Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Grayville, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"We own a home-based business which relies heavily on our computers operating efficiently. We have had a service contract with another computer repair business for several years. Recently when we were having problems with our computers, we tried contacting our service contractor multiple times. He never responded. Feeling frustrated, I contacted James at North Alabama Technical Services and explained our situation. He instantly came to our rescue. He "cleaned-up" our computers and took care of all the problems we were experiencing. He went above and beyond to help us in our dire time of need. We would strongly recommend James and his company for computer service needs. We have now retained him on a service contract and are looking forward to working with him in the future."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Showing 1-10 of 36
Heating and Air Conditioning questions, answered by experts

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

At a minimum, an HVAC system should be serviced once per year. However, a twice-a-year service schedule—once in the spring for the cooling system and once in the fall for the heating system—is often recommended, especially for older systems, heat pumps, or in climates with extreme temperatures. Regular service, which includes inspection, cleaning, and maintenance, ensures the system runs efficiently, helps prevent costly breakdowns during peak seasons, and can extend the unit's lifespan. You can also schedule a service if you notice issues like poor performance or strange noises.

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.

It depends on the type of AC unit and the extent of the mold growth. For example, if you have a small amount of mold in your central air conditioner, it’s worth cleaning it to protect your HVAC system and your health. In situations like these, you can often remove the mold yourself in a couple of hours. On the other hand, if you have a portable AC unit with a severe mold problem, it makes more sense to buy a new one. On average, replacing a portable AC unit costs $100 to $500.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

The Grayville, IL 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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