Lake County, Illinois
Heating and AC repair in Grayslake, IL
Call and describe the problem, whether the furnace will not light, the heat pump is iced over or the air conditioner is blowing warm air, and you will be connected with an independent HVAC contractor serving Grayslake.
Your call is connected to an independent HVAC contractor, subject to availability in your area. HVAC Nation may receive compensation when your call is connected with a participating provider. Providers are independent businesses.
Grayslake at a glance
Heating and cooling climate
NOAA's 1991–2020 climate normals for the MUNDELEIN 4 WSW, IL station (about 6 miles away) show about 6,875 heating degree days and 693 cooling degree days in a typical year, with about 140 nights at or below freezing and 11 days reaching 90°F or more. Heating demand is far larger than cooling demand here, so the furnace, boiler or heat pump carries most of the load and a breakdown in a cold snap is the most pressing kind of call.
How homes in Grayslake are heated
According to the Census Bureau's American Community Survey, 86% of occupied homes in Grayslake heat mainly with utility gas and 12% with electricity. Gas-fired furnaces and boilers are the most common setup, which means igniters, flame sensors, gas valves and venting come up often on heating calls.
Housing age and HVAC systems
The median year built for housing in Grayslake is 1994, and about 24% of its 8,485 housing units were built before 1980. Much of the housing is relatively recent, so many homes have ducted central systems, and the first generation of furnaces, air conditioners and heat pumps is reaching the age when repairs and replacements become more common.
Services most relevant in Grayslake
- Furnace Repair (87% of homes heat with gas, propane or oil)
- AC Repair (about 11 days a year at 90°F or more)
- AC Installation (newer homes adding or upgrading central air)
- HVAC Repair (one call when you are not sure which part failed)
Owners, landlords and tenants
About 78% of occupied homes in Grayslake are owner-occupied and 22% are rented. Homeowners, landlords and property managers can call to be connected; tenants should contact their landlord or property manager about heating or cooling problems first.
Nearby places
Grayslake is in Lake County. Places within about 30 miles include Elgin (26 mi), Kenosha, WI (19 mi), Waukegan (9 mi), Racine, WI (29 mi) and Schaumburg (22 mi).
Other Illinois locations
Lake Forest (12 mi), Zion (12 mi), Prospect Heights (17 mi), Niles (24 mi), Elmwood Park (31 mi), Maywood (33 mi), Palos Hills (46 mi), Harvey (54 mi), Frankfort (58 mi), Shorewood (58 mi), Freeport (82 mi), Rock Island (144 mi)
Questions
Is HVAC Nation an HVAC company in Grayslake?
No. HVAC Nation is a referral service. Calls from Grayslake are connected to an independent HVAC contractor, subject to availability in Lake County.
How do most homes in Grayslake heat?
Census survey data shows about 86% of homes heat mainly with utility gas, 12% with electricity, 1% with propane and 0% with fuel oil.
How cold and hot does it get around Grayslake?
NOAA normals for the MUNDELEIN 4 WSW, IL station average about 140 nights a year at or below 32°F and 11 days at 90°F or above.
Is a permit needed to replace a furnace or air conditioner in Grayslake?
Many cities and counties require mechanical or electrical permits for equipment replacement. Check with the local building department for Grayslake or Lake County, and ask the contractor.
What should I do if I smell gas?
Leave the home right away without using switches or phones inside, then call the gas utility emergency line or 911 from outside.
Sources: U.S. Census Bureau Vintage 2024 population estimates; American Community Survey 2020–2024 5-year (tables B25040 house heating fuel, B25034, B25035, B25003); 2024 Gazetteer; NOAA NCEI U.S. Climate Normals 1991–2020 (heating and cooling degree days, base 65°F).