By David Parks · eXp Realty · The Apollo Group · 2 min read
A heating inspection evaluates the furnace or boiler’s age, safety, and operation. The key items are heat exchanger condition, venting, carbon monoxide safety, and the system’s remaining life.
Most Colorado homes use a forced-air gas furnace. Older homes may have a boiler with radiators or baseboard heat, and some use electric or heat pump systems.
| Key point | What it means |
|---|---|
| Standard efficiency furnaces | Vented through a metal flue. |
| High-efficiency (condensing) furnaces | Vented with PVC and drain condensate. |
| Boilers | Heat water that circulates through radiators or baseboards. |
| Heat pumps | Electric systems that heat and cool, increasingly common. |
Check the manufacturer’s date on the data plate. Many furnaces last roughly 15 to 20 years with maintenance. Ask about service records, filter condition, unusual noises, rust, soot, and whether the burners light smoothly. A cracked heat exchanger is a safety concern and usually calls for an HVAC specialist.
If the furnace is near the end of its life, you do not necessarily need to walk away. Ask for a quote, factor it into your budget or negotiation, and make sure carbon monoxide alarms are working.
This article is general information, not legal, tax, financial or inspection advice. Every home and situation is different, so confirm details with a licensed inspector, lender, attorney or tax professional.
David is a Greater Denver real estate advisor with eXp Realty and The Apollo Group (Colorado broker license FA100103211). He has closed more than $55 million in volume, earned eXp Icon status in 2025, and holds a 5.0 rating on Zillow from 27 verified reviews.
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