When to Replace a Furnace
- Age + frequency of repairs is the strongest signal
- Heat exchanger cracks are usually a replace
- Year-over-year bill increases without explanation matter
- An on-site evaluation confirms the path
How long do furnaces last?
Most gas furnaces last 15–20 years with maintenance. Skipped maintenance and short-cycling shorten that window.
Questions to ask an HVAC contractor
- Are you licensed and insured to perform HVAC installation in my state?
- What system did you recommend and why?
- Did you run a load calculation for my home?
- What's included in the installation — equipment, labor, permits, thermostat, removal of the old system?
- What warranty applies to equipment and labor, and how long does it last?
- How do you handle ductwork issues that come up during installation?
- Is there a discount, financing, or seasonal promotion that applies?
- How will you protect my home during installation, and how long will the work take?
Ready to compare options?
Answer a few questions about your home and timeline, and HSRC can help connect you with a local licensed HVAC contractor.
Frequently asked questions
Many homeowners do — it avoids being without heat in peak season and lets you compare options without pressure.
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This guide is written to help homeowners understand common HVAC repair, installation, replacement, and quote considerations. It is educational and is not a substitute for an on-site evaluation by a licensed HVAC contractor. HSRC does not perform work directly, set contractor pricing, or guarantee availability — services and response times vary by location and provider.
A Clearer Way to Compare HVAC Installation Options
- • Learn what affects AC and furnace installation decisions
- • Understand repair vs. replacement considerations
- • Prepare better questions before speaking with a contractor
- • Use call or form options based on urgency
- • Get connected with local licensed HVAC contractors
Home Services Resource Center provides homeowner-friendly information and helps connect consumers with independent local service providers. HSRC does not perform HVAC work directly, set contractor pricing, or guarantee availability. Services, pricing, licensing, and response times may vary by location and provider.