Gas heaters at altitude
Thin air carries less oxygen for a flame. A heater and vent chosen for a house near sea level may need adjusting for a Colorado home, so mention your elevation when a new gas unit is on the table.
A flame that burns yellow and leaves soot, or a pilot that keeps blowing out, is a reason to call.
Choosing the size
For a tank, the busiest hour of hot water in your home sets the size, and the water heater size calculator returns it with a first-hour rating. For tankless, what counts is how many fixtures run together and how cold the incoming water is. The tankless flow calculator assumes water arriving at 42°F for every Colorado place on our list, a 78°F rise to reach 120°F.
How old is the heater?
The serial number on the tank label carries the year it was made, in a code that changes from one maker to the next. Our water heater age by serial number tool reads the major makes, and the answer tells you whether replacing an old tank or repairing a young one makes more sense.
Pipes next to a heater in an unheated garage are exposed to the cold, and a heater in a mountain cabin that sits empty all winter faces the same risk. If a supply line there splits, leak detection and slab leaks explains how it is traced, and the main page lists our other services.