ProgressivTube®
- What size do I need?

First estimate your hot water demand in gallons per day; use the chart below for an average figure (Note: add 15 gallons per additional person or 20 gallons per additional room). It varies widely with lifestyle (from 10 to 30 gallons or more per person) and with season (most people take longer and hotter showers in the winter).

People
Gallons
Bedrooms
Gallons
1
20
1
30
2
40
2
50
3
55
3
70
4
70
4
90
5
85
5
110

For situations involving small families in a large house, the number of bedrooms should be considered in sizing a solar water heater. A system sized to meet the needs of two people in a five bedroom house today will likely be inadequate for a family of five living in the same house tomorrow.

Next, choose a system from the following chart based on the gallons required. Note that multiple units may be combined to achieve the total gallons desired. It is generally wise to slightly oversize the system to help reduce backup requirements.

Model
PT20 PT30 PT40 PT50 PT60 PT80
Av. output (gal)
40 60 80 100 120 160


For additional information, please contact Customer Service.

 
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Cash Rebates

Using solar energy can save you money and reduce your direct impact on the environment. Federal, State and Local incentives are now available to help you achieve your goal of energy independence and to reduce your carbon footprint.


tax and utility company rebates and incentives

Plus many states are also offering substantial rebates and incentives to help you achieve your goal of energy independence and to reduce your carbon footprint.  

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