How My New Carrier Hybrid System Did This Winter

[teaysvalley]

I thought it would be interesting for some on here to see my first year results of installing a more efficient system. I installed a Carrier Hybrid system in August 09. It consists of a 60K BTU, 3-stage, Infinity ICS furnace matched with a single stage, 2-ton Performance 15 HP and the Infinity Controller. This replaced my downstairs system which was a 14 yo Rheem gas only furnace with A/C only outside unit. I think the Rheem was a 90% efficient furnace. I left my upstairs unit as is for now which is a 14 yo, 10 SEER 2.5 ton Rheem HP with backup strips.

2400 total sqft 2 story house.
35F Gas Furnace Lockout
18F HP Lockout
I used a 4F setback during the night and daytime with the new Infinity controller. I left the upstairs, non-setback thermostat at a constant temperature.

I compared the heating season from the October to March time period for 08/09 vs. 09/10.

(from NWS data at the nearby airport)
08/09 HDD - 4080
09/10 HDD - 4212
It was colder this year, but not by much.

08/09 Gas Cost - $463.28
09/10 Gas Cost - $180.35
I didn't use any gas until late November this year with the new hybrid system.

Savings of $282.93 on NG.

08/09 Electric Cost - $831.78
09/10 Electric Cost - $952.56

Increase of $120.78 on electric. Total utility savings this year $162.15 with a 132 HDD colder winter.

I expected this because of the additional HP downstairs and I still had an older HP heating the upstairs. The saving were not a whole lot, but the comfort factor means a lot to me too. I'm highly pleased with the comfort and quietness of the Carrier Hybrid Infinity system.

When my upstairs unit quits, I plan to replace it with a Carrier 2-stage Infinity HP system. The Infinity controller is a neat device.

[dandyme]

glad you are pleased

the heat pump up stairs would account for most of the electric $$$

[teaysvalley]

glad you are pleased

the heat pump up stairs would account for most of the electric $$$

It doesn't run as much as you would think because the warm air rises from below. Only when it is really cold out do you hear it kicking on a lot. Rarely do I see the supplemental heat light on. During the summer, it naturally runs more.

[dash]

It doesn't run as much as you would think because the warm air rises from below. Only when it is really cold out do you hear it kicking on a lot. Rarely do I see the supplemental heat light on. During the summer, it naturally runs more.

Keep on mind that cold air falls, plus the upstairs ha more attic. So potential summer time saving may help you decide on replacement of the upstairs unit before it fails.

Remember you are paying for high efficiency heating and cooling ,whether you buy it or not !!!! Your utility thanks you for not buying.