WaterFurnace 5 Series · Best seller
5 Series 500A11
The unit we install most. The sweet spot of price and performance.
- 30.0
- EER cooling
- 5.0
- COP heating

Why this unit
The 500A11 is the packaged unit that fits the widest range of houses: one cabinet, single-speed or dual-capacity, happy in any climate we work in.
It will not win the spec-sheet race against the 7 Series, but at 30.0 EER and 5.0 COP it still runs circles around anything burning fuel, at a price that keeps the payback short.
Best for: Most single-family homes replacing a furnace and AC pair.
- Packaged single-cabinet design, simple to service
- Single speed or dual capacity options
- Aurora controls platform
- Optional hot water assist
- The model behind most of our 5-star reviews
Documentation
Spec sheets come with your proposal. Ask the designer for any manual on the spot.
Price a 5 Series 500A11 for your address
Free site visit, load calculation, and a fixed-price proposal with every incentive included.
Contact
Talk to a person, not a phone tree
Question about your system, a strange noise, or just want a second opinion on a proposal you got elsewhere? Write or call, a geothermal designer answers both.





