Home » Transfer Switches » Single Circuit Generator Transfer Switch, For Furnaces, Boilers & Sump Pumps

Single Circuit Generator Transfer Switch, For Furnaces, Boilers & Sump Pumps

HTS15-MANThought I would share the news of my new single circuit transfer switches that I make through my company Heezy LLC. Pictured is the newest Manual transfer switch and I also have an automatic version.

They are quite easy to install even if you don’t have much experience with doing electrical work, I include easy to follow instructions and even have a few videos on installing them.

If you would like to read more or order one, please check out the HTS15-MAN manual version here, or the HTS15-AUTO automatic version here.

Thanks for all those who have ordered, asked questions or given me some advice along the way.

Comments

  1. Todd says:

    Rick,
    I recently wired a DIY transfer switch for my gas furnace to run off a cord to a gennie or inverter. Now I’m wondering if it’s the right thing.

    Only cost about $30 for a 4″ metal work box & cover, a length of cord and 3-prong plug, wire nuts, connectors, etc., and the main part: a 20A DPDT toggle switch, (On-Off-On). Mounted the box right to the side of the furnace where the wiring enters. Put the flex conduit into the side of the work box. Nice clean installation.

    Question: is the DPDT toggle adequate for a transfer switch? When it’s thrown to “aux power” (i.e. the cord), there is no longer any connection back to the main breaker panel, (except perhaps the ground).

    Is this safe/legal/kosher/ to code, or do I need to buy a UL-listed transfer switch like you show?

    I like yours with the breaker and light, but I’ve already installed this one. Tested and it works great, but I haven’t run it from the inverter…. Will a square wave inverter run my furnace, or ruin the circuit board? I’m a little afraid to try it.

    Thanks

    1. Rick says:

      Hey Todd, Yea sounds like you’ve done it right. If the DPDT (on-off-on) switch is rated for 15 or more amps your good there. All the Transfer switches made use a DPDT switch with a Center Off Position thus allowing no chance of cross or back-feeding the power. you won’t have any issues with the inverter ruining your baord, I’ve done several post on this, more can be read here; If the inverter won’t run it the first time, try grounding the inverter to your main house ground or adding a new one, if that doesn’t work try a ground-neutral bond. Cheers

      1. Todd says:

        Thanks Rick for the advice. I really enjoy your web site, good stuff here. Found it from the forum on TSP.

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About Rick

I've been an HVAC/R Mechanic working in the Seattle area for over 15 years, specializing in the commercial service industry.. I’m also a Licensed Electrician & Gas Piping Mechanic and have numerous other trade related certifications. I’ve instructed at local trade schools and now continue teaching through this site.

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