Tankless Gas Water Heater Installation Requirements

For both gas and electric models a tankless water heater s overall energy efficiency is measured using an energy factor ef rating.

Tankless gas water heater installation requirements.

Tankless water heaters generally require larger diameter gas supply lines higher voltage power supply if contemplating electric on demand dedicated special stainless steel flue known as category ii iii or iv or larger diameter exhaust system. A full bore shut off valve is required on cold water side unions must be installed within 12 inch of water heater to facilitate removal first five 5 feet of water line insulated maintains min. The manual clearly says to appoint a licensed electrician or plumber for the job. As a general rule any gas heater which is tankless uses combustion air must have a minimum area of 10 000 cu.

With so many types of electric tankless water heater it s obvious the installation process can t be exactly generalized. Please take these things into consideration before you decide to diy. Around the water heater. Restrictions on gas fueled tankless water heaters no gas appliance may be located in a room used.

If reticulating pump in system. Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models. A tank type water heater and a tankless or demand water heater for. The models which need combustion air from the outside are required to have a second hose which is supposed to be put in.

Insulation is applied to the entire loop. This ef rating is based on test procedures developed by the u s. Build a platform with 2 x 4 inch pieces of lumber that will allow you to mount the new tankless water heater about four inches from the wall. And so some manufacturers don t recommend diy installation.

If money or return on investment is the principal reason you are considering converting to a demand type water heater you should perform an accurate total cost analysis that reflects all of the costs to install operate maintain both types of water heaters. Enclosed areas just as closets might need air ducts and extra air inlets. Choose a location for the new water heater that will allow you to vent it to the outside easily. Mount the tankless water heater securely to the platform.

Electrical even gas water heaters have electrical parts and need to be hooked up to your breaker box.