How to Build a Propane Hot Water Heater: A Comprehensive DIY Guide

Building a propane hot water heater can be a rewarding and cost-effective project for the DIY enthusiast. This comprehensive guide will walk you through the step-by-step process of constructing a reliable and efficient propane-powered water heating system, complete with technical specifications and expert insights.

Parts Needed for Building a Propane Hot Water Heater

To build a propane hot water heater, you’ll need the following parts:

Propane Water Heater: Choose a high-quality propane water heater, typically available in 10-liter or 16-liter capacities, with a maximum temperature range of 140°F to 167°F.
Water Circulation Pump: Select a 120-volt water pump with a flow rate of 350 GPH (Gallons Per Hour) and a maximum head pressure of 4.6 feet.
1/2″ Vinyl Tubing: Acquire 20 feet of 1/2″ inside diameter vinyl tubing, rated for a maximum working pressure of 60 psi.
1/2″ Brass Hose Adapters: Purchase a 6-pack of 1/2″ brass hose adapters, capable of withstanding a maximum working pressure of 150 psi.
Inline Water Filter: Install an inline water filter with a micron rating of 20-30 μm to remove any debris from the water.
7/8″ Hole Saw with Arbor: Use a 7/8″ hole saw with an arbor to create the necessary openings in the stock tank.
Brass Through-Fittings: Obtain 2 brass through-fittings, also rated for a maximum working pressure of 150 psi.
Outdoor Power Strip: Utilize an outdoor power strip with a maximum load of 15A and a surge protection rating of 600V.
GFCI Inline Plug (Optional): For added safety, consider using a GFCI (Ground Fault Circuit Interrupter) inline plug.

Tools Needed for Building a Propane Hot Water Heater

how to build a propane hot water heater

To complete the construction of your propane hot water heater, you’ll need the following tools:

Flathead Screwdriver: For securing and adjusting various components.
Utility Knife: To precisely cut and trim the vinyl tubing.
Pliers: For tightening connections and manipulating fittings.
Drill: To create the necessary holes in the stock tank using the 7/8″ hole saw.

Step-by-Step Guide to Building a Propane Hot Water Heater

Prepare the Stock Tank: Begin by emptying the stock tank and adding two spigots on the side. This will allow the water to pass through a filter before entering the pump.
Install the Water Pump: Connect the 120-volt water pump with half-inch barb fittings to the stock tank using the 1/2″ inside diameter vinyl tubing and brass adapter fittings.
Install the Inline Water Filter: Place the inline water filter after the pump to remove any debris that may be present in the tank.
Connect the Propane Water Heater: Securely connect the propane water heater to your propane tank. The heated water will then flow directly back into the stock tank.
Install the Brass Through-Fittings: Drill small 7/8″ holes in the side of the stock tank and install the brass through-fittings, which can withstand a maximum working pressure of 150 psi.
Set Up the Power Strip and GFCI Inline Plug: Connect the water pump, propane water heater, and any other electrical components to the outdoor power strip. For added safety, consider using a GFCI inline plug.

Technical Specifications for the Propane Hot Water Heater

Propane Water Heater: 10-liter or 16-liter capacity, with a maximum temperature range of 140°F to 167°F.
Water Circulation Pump: 120-volt pump with a flow rate of 350 GPH and a maximum head pressure of 4.6 feet.
1/2″ Vinyl Tubing: Maximum working pressure of 60 psi.
1/2″ Brass Hose Adapters: Maximum working pressure of 150 psi.
Inline Water Filter: Micron rating of 20-30 μm.
Brass Through-Fittings: Maximum working pressure of 150 psi.
Outdoor Power Strip: Maximum load of 15A and a surge protection rating of 600V.

References

By following this comprehensive guide, you’ll be able to build a reliable and efficient propane hot water heater that can provide you with a steady supply of hot water for your needs. Remember to always prioritize safety and follow local regulations when working with propane and electrical systems.