The Average Cost to Repair A Water Heater. When a water heater breaks down, the average cost of a repair is $455. Most homeowners pay between $365 and $540 to have their broken hot water heaters fixed.
http://www.improvenet.com/r/costs-and-prices/water-heater-repair-cost
Furnace labor costs. Installing a furnace also comes with labor costs. The price of labor isn't fixed, but many companies charge approximately $75 per hour for a licensed installer and $50 for a helper. For an 8-hour install, this comes to $1,000 for labor alone.
https://www.angieslist.com/articles/how-much-does-it-cost-install-new-furnace.htm
Typical cost here in the Philly area for a 40 gallon gas water heater installation is between $600-800. Don't forget that they also take away the old one in many cases and that can also be a hassle (and possibly an additional expense) if you had to handle it yourself. Answered 5 years ago by Sherlock Homes.
http://answers.angieslist.com/How-water-heater-installation-cost-q25081.aspx
An average water heater tank lasts for eight to 10 years. If your water heater is old and breaks down, you may be better off replacing it, as the average repair costs more than half the average cost of replacement. If a costly part has broken, replacement may be a wise decision, as more parts could soon fail.
http://www.improvenet.com/r/costs-and-prices/water-heater-repair-cost
Total Overhaul: $2,600 - $4,300. • 1  Water Heater: To ensure convenience and performance, this installation includes a large gas heater to replace the electric tank, as well as electric point-of-use heaters installed in the kitchen and master bathroom. The added equipment raises materials costs to $1,600 to $2,600.
https://www.proreferral.com/hg/cost-install-tankless-water-heater/
The most common residential furnace is powered by natural gas. According to Bluebook International, which publishes residential repair and replacement costs, the cost of a standard efficiency natural gas furnace ranges from $2,250 to $3,800. You may incur higher costs, depending on the complexity of the install or if you choose a higher efficiency unit.
https://www.angieslist.com/articles/how-much-does-it-cost-install-new-furnace.htm
• Water Heater: To ensure convenience and performance, this installation includes a large gas heater to replace the electric tank, as well as electric point-of-use heaters installed in the kitchen and master bathroom. The added equipment raises materials costs to $1,600 to $2,600.
https://www.proreferral.com/hg/cost-install-tankless-water-heater/
We just had a gas water heater installed for $1700, the water heater is. beside the dryer (which was commonplace in homes built in the 70's)--now. against codes, so we had to have some venting and other stuff installed. to bring it up to codes. We got a 50 gallon tank and a water heater. that has a warranty of 10 years.
http://answers.angieslist.com/How-water-heater-installation-cost-q25081.aspx
• Water Heater: When an electric on-demand water heater meets the needs of the home, it typically makes for the simplest and most economical replacement scenario, with a whole-house heater ranging from about $400 to $1,200.
https://www.proreferral.com/hg/cost-install-tankless-water-heater/
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average cost to replace standard gas hot water heater
The average cost to replace standard gas hot water heater is $2,600 to $4,300. The average cost to replace a standard gas water heater is $2,600 to $4,300.