HVAC Installation in Mentor, OH
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Lake County will get in touch.
Tell us about the job
It takes about a minute.
A system that works most of the year in Mentor
Winter nights here average 23°F, and homes need heat from October through May, eight months of the year. Add three months of summer cooling with afternoons around 80°F, and a furnace or AC here is working 11 months out of the year between the two. Whatever gets installed has to hold up on both ends of that range, not just the cold or just the heat.
Most homes in this area heat with gas, so the furnace carries the load through a long winter. Power matters too. Ohio saw 18 percent of households lose power for 24 hours or more in 2024, and this area has logged 10 winter storms and 82 damaging wind events over the past ten years. A new system here should be sized and installed with that in mind, not just a mild day in spring.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 23°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
In Ohio, HVAC licensing for homes is left to the counties.
That means whether the contractor doing your installation is licensed depends on Lake County's own rules, not the state's. Ohio does define what a home contractor is, and that definition includes carrying at least $250,000 in liability insurance, but that is a definition written into state law, not a license anyone had to earn or a test anyone had to pass.
With no state license standing behind the work, what protects you here is the permit process. Installing a furnace, air conditioner or heat pump needs a permit from the local building office in most cities and counties, and an inspection once the work is done. That is the check this job gets in Ohio, in place of a state license.
Source: Ohio Legislative Service Commission
- When should I replace my HVAC system?
- Replace it when repairs get frequent, the unit is old, or it can't keep up on the coldest or hottest days. A furnace working hard every night at 23 degrees is under more strain than one in a milder climate, so age matters more here than the number on the calendar alone. If a contractor has already been out more than once this year for the same system, that's usually a sign to talk about replacement instead of another repair. A working system that heats and cools fine doesn't need to be replaced just because it has some years on it.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together is often the more practical choice, but it isn't required. A furnace and air conditioner installed at different times can still work fine side by side. The main thing to check is whether they're matched to work together efficiently. If one is much newer than the other, a contractor can tell you whether pairing an old unit with a new one will cause problems or not.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace or air conditioner in place, and connects it to the ductwork, gas line or refrigerant lines, and electrical. They test the system to confirm it's heating or cooling correctly and check the airflow through the ducts. With homes here needing heat or cooling 11 months out of the year, getting the system running correctly before the next season starts matters more than it would somewhere with a shorter heating or cooling stretch. A contractor can walk through the specific steps for your home and equipment.

