Choosing an AirGenerate Water Heater for Energy Efficiency
How did we choose an AirGenerate water heater for our home? We are a household of 2 people and 1 dog in a 2 bedroom/ 1bath home. We are misers with our electricity usage; our daily usage usually falls between 10-15 kWh. We started remodeling our house a few years ago….. Overall we have been happy with the tankless water heater, but we are always looking for ways to keep our energy costs as minimal as possible. At that time we thought that a tankless, electric water heater was the best, most energy efficient option for our household and we were right, until now.
My husband and I were interested in changing out our electric tankless water heater for a more efficient option. Initially we considered solar thermal, but did not have enough solar exposure to make it a cost effective investment.
We previously replaced the old baseboard heaters with a ductless heat pump (DHP) in 2010. We were excited to see how much the DHP reduced our winter heating bills! After we had a ductless heat pump installed in our home, we were interested to learn more about using heat pump technology to heat our water too. When we learned about AirGenerate’s water heaters we decided that heat pump water heaters (HPWH) were finally ready for “prime time” and decided to buy one and install it in our home.
When we heard about using a heat pump to heat our water we were very interested in how it would work in our home. After researching more about how heat pump water heaters (HPWHs) work in the Northwest, we decided to move the water heater to the garage and go after a Tier II product (the most efficient one on the market).
We decided on the AirGenerate water heater, model AirTap ATI66, because:
- it offered the best construction,
- was the most energy efficient,
- was the least noisy during operation.
We ordered the AirGenerate AirTap water heater from GP Conservation in Portland and used our local Roto-Rooter plumbers to get the unit installed. Our utility, EWEB, also informed us about a $25 EWEB water heater rebate, a $400 Oregon Residential Tax Credit, and $1000 Smart Water Heat Rebate.
Utility Monitoring Program
We decided to volunteer to participate in EWEB’s water heater study that measures the AirGenerate water heater’s performance. Our water heater is now being monitored along with 30 other water heater sites; it is a great opportunity for continued learning and technological comparisons regarding how HPWHs affect the residential household load. The unit is installed and EWEB is monitoring it using Carina Technology’s WISE control system to see just how efficient it is to run. Even though we have only had the unit installed for a few weeks, we are already seeing a reduction in the water heating portion of our household energy use. Plus we have more hot water than we know what to do with! We were excited to learn more about how this water heater compared to more ‘traditional’ units.
Our Neighbor’s 1st Impression
” THIS DOES NOT LOOK LIKE ANY WATER HEATER I’VE EVER SEEN BEFORE”
Eric & Marianne
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