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TRUSTED BY SULLIVAN, OH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Sullivan, OH

*The Angi rating for Heating And Air Conditioning Service companies in Sullivan, OH 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 Sullivan, OH 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 May 04, 2026

Find Heating and air conditioning pros in Sullivan

Avatar for Comfort Control
Comfort Control
4.7(
3
)

Serving Sullivan, OH and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Got the part needed in good time, Matt the service man was very pleasnat and knew what he needed to do to get us heat again, great job."
New 5-Series Geothermal
Nu-Calgon iWave Install
Pressure-less Flow Center
Lennox Furnace and Rheem Water Heater
Lennox Furnace and Water Heater

+26

Response time2 days
Recommended by66%of homeowners
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Avatar for ZEL Electric
ZEL Electric
New to Angi

Serving Sullivan, OH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

⚡ Welcome to ZEL ELECTRIC ⚡\n\nWe’re a licensed & insured electrical contractor proudly serving Medina County and surrounding areas.\n\nFrom service upgrades and panel work to lighting, EV chargers, and residential or commercial electrical projects, we focus on clean, safe, and code-compliant work done right the first time.\n\n📞 Call or message us for a free estimate\n216-318-3381\n\n⚡ Driven by Energy. Built on Trust.

Barn wire
Barn wire
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Jalen Alonzo
New to Angi

Serving Sullivan, OH and surrounding areas

Approved

Reliable and affordable electrical services for residential and small commercial projects. I specialize in troubleshooting, repairs, installations, lighting upgrades, outlets, panel work, and more. With a focus on safety, quality workmanship, and honest pricing, I make sure every job is done right the first time. Whether it’s a quick fix or a full upgrade, you can count on dependable service and clear communication from start to finish.

1 neighbors recently requested a quote
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Avatar for Litto Home Repairs
Litto Home Repairs
New to Angi

Serving Sullivan, OH and surrounding areas

Approved

My name is Thomas Litto, and I am the owner of Litto Home Renovations. I have hands-on experience in a wide range of home repairs and renovation work, including replacing flooring, handling electrical and plumbing projects, and much more, as well as performing demolition for remodels and renovations. I take pride in providing reliable, high-quality workmanship and helping homeowners improve and transform their spaces with careful attention to detail.

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Heating and Air Conditioning questions, answered by experts

As a general rule, you should have your HVAC system professionally serviced at least once a year, though it's best to follow the manufacturer's specific recommendations. Many experts suggest twice-yearly maintenance: once in the spring for the cooling system and once in the fall for the heating system. This is especially recommended for older units, systems with recurring issues, or heat pumps that provide both heating and cooling. Regular service, which can cost between $100 and $550, keeps the system running efficiently, helps prevent costly future repairs, and saves money on utility bills.

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 cost to install a ductless mini-split AC system ranges from $2,000 to $14,000, depending on the type of unit, the number of zones or rooms, and the complexity of the installation. On the low end, a system for one or two zones in a single room costs around $2,000. Covering two zones for more rooms can cost between $6,000 and $8,000. For a larger multi-zone system to cover an entire home, costs can be $14,000. If you don’t already have an AC system in place, you may need to add the cost of permits, an electrician, and a concrete pad.

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The Sullivan, OH 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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