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

Efficient heating and cooling
5.0(
2
)
Geothermal Heating or Cooling System - Service

Serving Castalia, OH and surrounding areas

Approved

13 years experience, we install furnaces, a/c systems and ductless systems. 10 yr warranties on all equipment. We also offer a/c tune ups which consist of cleaning outdoor condenser and all checking refrigerant charge on your system. We also offer a complimentary air filter change with this service. Don't wait until its hot to make sure your system will operate properly.

Upper bedroom
Clean
Finished
Cassette
Cracked heat exchager

+3

Avatar for Great Lakes Electric
Great Lakes Electric
4.5(
24
)
Gas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - RepairCentral A/C - Install+13 more

Serving Castalia, OH and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

Proudly serving Erie and Huron Counties since 1996.\n\nFor 30 years, Great Lakes Electric has been a trusted provider of electrical services throughout North Central Ohio. We take pride in delivering safe, reliable, and high-quality workmanship for homeowners and businesses alike.\n\nOur team of skilled, trained electricians specializes in residential and commercial electrical services, HVAC, generators, home lighting, and more. We are committed to completing every project safely, on time, and within budget.\n\nBuilt on a foundation of quality workmanship, dependable service, and lasting customer relationships, Great Lakes Electric is proud to serve the communities where we live and work.\n\nAll of our work is backed by a 100% satisfaction guarantee.

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+3

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Heating and Air Conditioning FAQs, answered by experts

No. Evaporator coils are designed to work with specific refrigerant types, and they are rated by what kinds of refrigerant they use. It’s indicated with an “R” code. It’s important to match your evaporator coil and refrigerant or your system will not work properly. An AC technician can tell you what type of refrigerant your system needs and what evaporator coils will work with it.

Most units are designed only to cool the house down to 20 degrees less than the temperature outside. This means that if it’s 99 degrees Fahrenheit out and you’re trying to cool your home down to 65 degrees, you’ll notice your AC is struggling. 

Lower the blinds on all your windows, turn on your ceiling fans, and keep the thermostat at a consistent temperature to help your AC do its job. Investing in an HVAC maintenance plan also helps because pros will come out to inspect and tune up your unit regularly, keeping it in optimal working condition.

No, a furnace is not the same thing as an AC, or air conditioner, but these are both parts of an HVAC system. They both use air ducts to transport cool or hot air around your home to achieve a comfortable temperature set by your thermostat. An AC runs on electricity, while a furnace can use different fuel sources.

Yes, AC coil cleaning is definitely worth it. Cleaning your AC coils ensures your AC unit will function efficiently for the long term. Dirty and grimy AC coils make your unit work harder to cool your home, resulting in higher electric bills. Additionally, having your coils professionally cleaned regularly will reduce the possibility of extensive maintenance and repair costs.

You will enjoy greater energy efficiency and save on your annual energy bills, with new, modern HVAC systems using 30% to 50% less energy than older models. Upgrading your HVAC system is also a great way to embrace new technology, such as smart thermostats, lighting, fan speed, and humidity from your phone or tablet.

The Castalia, 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.