Compare Water Heating Options

This tool can help you estimate what your annual water heating costs would be using different heating systems. Look for the row that best describes your current water heating system then press the Increase or Decrease buttons until the Annual Cost approximates yours. You can also modify fuel price assumptions.

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Fuel Type
(Units)
Cost per Unit
Delivered
Domestic Water
Heating System
See
Details
Annual
Cost
1.
$

Assumptions:

%
%
2. (gallon)
$

Assumptions:

%
%
3. (ccf)
$

Assumptions:

%
%
4. (ccf)
$

Assumptions:

%
%
5. (kWh)
$

Assumptions:

%
%
6. (gallon)
$
Cold start boiler, indirect tank

Assumptions:

%
%
7. (kWh)
$

Assumptions:

%
%
8. Propane (gallon)
$
Instantaneous

Assumptions:

%
%
9. (gallon)
$

Assumptions:

%
%
10. (gallon)
$

Assumptions:

%
%
11. Oil (gallon)
$

Assumptions:

%
%
12.
$

Assumptions:

%
%

  • To talk with a professional about upgrading your water heating system, contact an Efficiency Maine Registered Vendor.
  • Your fuel prices may differ. Check here for up-to-date and regional pricing.
  • Click here for information on Efficiency Maine’s incentives for water heating system upgrades or here for project financing.