To select the right hot water heater for your home, you need to consider the size of your family and other factors that contribute to your First Hour hot water needs.
To Choose the Right Water Heater for You…
1. Determine whether your family is Low Demand or High Demand.
You should consider your family to be High Demand if…
- There are more than two full baths in the home.
- If you have an oversized whirlpool bath or other large tubs. As a rule of thumb, the water heater tank capacity should be 100% of your bathtub capacity (example: 75-gallon tub / 75-gallon water heater).
- There are (or will be) teenagers living in the home. It’s a fact: teenagers use more hot water for showering and washing clothes.
2. Find your Family Size and Demand Profile in the chart below, and read across to find the First Hour Rating Requirement for your family. If you decide your family is High Demand, consider moving up to the next First Hour Rating level. If you are a 2 member family but consider yourselves high demand, you may want a water heater rated for 3 people.
Water Heater Sizing Guide
||FIRST HOUR RATING REQUIREMENT
|2 People||45 – 55 Gallons|
|3 People||55 – 65 Gallons|
|4 People||65 – 75 Gallons|
|5 People||75 – 85 Gallons|
|6 People||85 – 100 Gallons|
3. Choose the best type of unit for your needs. There are many types of hot water heaters.
- Direct Fired – which have their own oil burner.
- Storage / Booster Tank – which is nothing more than a large thermos supplied hot water from your boiler’s coil.
- Indirect Coil – where the boiler supplies hot water to a coil directly heating your domestic water in the storage tank.
- Indirect Tank-n-tank – where the boiler supplies water to an outer lining tank which directly heats up a domestic storage tank on the inside.
Tragar recommends the following hot water storage manufacturers: