HVAC in Addison, IL
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Half of the roughly 13,000 homes in Addison, IL were built before 1972, according to Census estimates for this city of about 35,000 people. DuPage County is in climate zone 5A (cool, humid), which shapes what heating and cooling work involves here. Here is what that means for your project, plus permit and license tips and questions to ask before you hire.
This page covers Addison and its 1 ZIP code. When you call or send a request, your ZIP code decides which company can take it.
HVAC in Addison: what the local homes and climate mean
The median home in Addison was built in 1972, and about 69% were built before 1980. Many homes from this era still have their original ductwork. Leaky or undersized ducts can hold back a new system, so ask for a duct check with any replacement quote.
The U.S. Department of Energy places DuPage County in climate zone 5A (cool, humid). Heating carries most of the load here. If you are considering a heat pump, ask whether the model is rated for cold climates and how backup heat works. In a humid climate, ask how the system will control indoor humidity, not just temperature. Whatever the climate, ask for a room-by-room load calculation (ACCA Manual J) instead of matching the size of the old unit.
About 82% of occupied homes in Addison heat with utility gas and 15% with electricity. Many replacement quotes will involve a gas furnace or boiler; if you are thinking about switching to an electric heat pump, ask whether your electrical panel needs an upgrade.
Permits and licenses in Addison
Replacing a furnace, air conditioner or heat pump usually needs a mechanical permit and a final inspection. In Addison, permits come from the city's building department, or from DuPage County for addresses outside city limits. Ask the company who pulls the permit, and keep a copy of it.
Illinois has no statewide general contractor license; IDFPR licenses roofing contractors. For other trades, ask your city or county building department which license applies, and ask the company for its license number.
Look up a license: Department of Financial and Professional Regulation
Questions to ask an HVAC company in Addison
- Will you do a load calculation (ACCA Manual J) before recommending a size?
- What efficiency ratings (SEER2, HSPF2 or AFUE) does each option have?
- Who pulls the permit, and is the final inspection included?
- What warranty covers the equipment, and what covers your labor?
HVAC companies serving Addison
Company profiles for Addison are on the way. Call or send a request above to reach a company that covers your ZIP code.
HVAC in Addison: questions
Do I need a permit for heating and cooling work in Addison?
Replacing a furnace, air conditioner or heat pump usually needs a mechanical permit and a final inspection. In Addison, permits come from the city's building department, or from DuPage County for addresses outside city limits. The company you hire usually pulls it.
How do I check an HVAC company in Addison?
Illinois has no statewide general contractor license; IDFPR licenses roofing contractors. Ask for the company's license or registration number and look it up with the Department of Financial and Professional Regulation. Also ask for proof of insurance and get the scope in writing.
What climate zone is Addison in?
DuPage County is in IECC climate zone 5A (cool, humid), per the U.S. Department of Energy's county map. Heating carries most of the load here.
How old are homes in Addison?
Census estimates (ACS 2020-2024) put the median build year at 1972, and about 69% of homes were built before 1980. Many homes from this era still have their original ductwork.
How does Swupi work in Addison?
Call or send a request with your ZIP code, and Swupi connects you with an independent HVAC company that serves your area, including nearby Itasca, Wood Dale and Bensenville. You agree on price and timing directly with that company.
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