Looking for a heat pump installer in Third Lake, IL? Describe your project once and up to three licensed HVAC contractors who work in Third Lake and Lake County get back to you with a quote. It's free and there is no obligation.
Third Lake is home to about 1,114 people (2024 Census Bureau estimate), a stable community (−0.4% since 2020). With 1,894 people per sq mi, it is a suburban area. Rising energy costs and new equipment make heat pumps a common upgrade here.
Third Lake at a glance
- Population (Census Bureau estimate, 2024)
- 1,114 (−0.4% since 2020)
- Rank in Illinois
- 621st of 1,294 cities and towns
- Land area
- 0.6 sq mi
- Population density
- 1,894 people per sq mi (suburban)
- Type
- Village (Third Lake village)
- Main county
- Lake County
What to check before hiring in Third Lake
- Sizing: ask for a load calculation, not a rule of thumb.
- License and permit: in Illinois, installation needs a licensed contractor and a mechanical permit.
- Rebates: check your utility and state programs.
- Price drivers: system type, capacity, ductwork and electrical upgrades.
Useful official resources
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ENERGY STAR
Official information and guidance.
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U.S. Department of Energy: heat pump systems
Official information and guidance.
Services available in Third Lake
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Ducted heat pump
Central heat pump system using existing or new ducts, with the permit.
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Ductless mini-split
One or several ductless indoor units connected to an outdoor heat pump.
Frequently asked questions in Third Lake
How much does a heat pump cost in Third Lake, IL?
It depends on the system, the home and the ducts. Describe your home: contractors who serve Third Lake reply with a quote.
How long does installation take?
Often one to three days.
Will I need a panel upgrade?
Sometimes; the contractor checks your electrical capacity.
Which licensed HVAC contractors will contact me?
Up to three independent licensed HVAC contractors who serve Third Lake and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.