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The Costs of Converting to Natural Gas

Furnace BTU Output Required

See the BTU Requirements Guide below.

Installed Costs BTU
50 k 75 k 100 k 125 k 140 k
FORCED AIR FURNACES
High Efficiency $2,400 $2,900 $3,200 $3,600 $4,000
Mid Efficiency $2,100 $2,500 $2,800 $3,200 $3,500
BOILERS
Mid Efficiency $2,500 $2,500 $2,500 $3,000 $3,000
High Efficiency $4,200
COMBINATION SPACE/
WATER HEATING
$2,600
rent $20.95/mo
$2,800
$31.70/mon.
$3,000
$33.65/mo
$3,000
$33.65/mo
WATER HEATER Rent Standard $8.35 Buy and Install $450
  Power Vent $13.45 Buy and Install $800
POSSIBLE ADDITIONAL COSTS
Power Vent Kit
Metal Chimney

$700
$450
 
IF HOME IS ELECTRIC BASEBOARD HEATED
Ductwork Costs

Plans and Permits

1 story house
$3,000 - 5,000

$500

2 story house
$4,000 - 7,000

$500

Assumptions and Notes

  • There is a natural gas main on the street and is 30m (90 ft.) or less from the house.
  • The installation requires less than 10m (30 ft.) of gas pipe inside the house.
  • This price data is based on average estimates obtained from the information sources below. The information is intended to be a guideline for the cost effectiveness of heating system conversion. Individual contractors may charge more or less, depending the degree of difficulty of the installation, the time of year, how busy the contractor is and the brand of furnace chosen.
  • As with any major purchase, a homeowner would obtain several quotes on the work.
  • Only required elements are included in the payback calculation. Extras, such as air cleaners, are not considered essential to heating system operation
 

BTU Requirement Guide

This varies with a number of factors, including home size, location, age of house, insulation level, number of occupants and typical temperature setting. The following can be used as a guide.

The most accurate way of calculating this requirement is use the volume calculator.

House Size BTU/HR
< 1,200 sq. ft. 50,000
1,200 - 1,600 sq. ft. 75,000
1,600 - 2,000 sq. ft. 100,000
2,000 - 3,000 sq. ft. 125,000
3,000 - 4,000 sq. ft. 140,000
 

Information Sources

Enbridge Gas Distribution Inc., Bryant Heating, Davenport-Campbell, Laird & Son, Lennox Industries, Carrier

Add-on Extras

Central Air Conditioning $2,500
Electronic Air Cleaner $600
Humidifier $200
Electronic Thermostat $150