Get Started!
Take our water heater selector quiz to find the correct water heater for your home.
Sign Up Today!
24/7 same-day water heater repair or replace for your business.
Search Now!
Search here to find helpful information, including specs sheets, manuals, diagrams, and maintenance & troubleshooting technical support videos
Featuring a 40-gallon (nominal) tank and a 40,000 BTU gas burner, the GUF-40 standard vent delivers a first hour rating of 70 gallons and a recovery rate of 42 gallons per hour.