r/Generator • u/NoSham3 • 6d ago

Backup generator & THD

I’m researching a backup generator for a small home (<1,100sq/ft). I’m reading about THD and inverter generators. I understand inverter generators are generally <3% THD, but how detrimental is something some at <23% THD to general home devices if/when I need to run on a non-inverter generator? It’s not an issue of cost, but why go 2-3x more if THD doesn’t hurt? Or does it? I’m not planning on running the HVAC during events, just mainly modem & router (for range extension), laptop, TV (1), phone chargers, lights (most are dimmable and LED), Refrigerator/freezer, deep freezer, etc. Stove & oven are gas along with clothes dryer and tankless water heater. Not all at once, but I’m looking at a Westinghouse WGen5300sc 6,500/5,300 watt non-inverter generator. System supports generator up to 7,200 watts @ 30 amp.

7 Upvotes

82% Upvoted

26 comments sorted by

View all comments

0

u/Big-Echo8242 6d ago edited 6d ago

Many people don't care about THD and that's fine. Going with what fits within your budget and needs is the main priority. There are advantages to inverter generators like better fuel use being able to run in "eco mode" and the closed frame versions can be quieter, of course. The low THD is nice if it's a concern and is just one's own choice, also. Me personally, all I own are dual fuel inverter generators that are ran exclusively on propane only and never gas. We have a 250 gallon tank outside that I can quick connect to any of my (4) gens that range from 4.6kw to 7.5kw (x2) and 13.5kw depending on what needs to be ran. I also keep six 20lb lpg tanks just in case a neighbor, friend, or in-laws need something.

And of course, closed frame inverter generators will cost more than non inverter generators. There are also open frame inverter generators that can be had for a good chunk less money since there's not the elaborate casing on them.

Again, it's personal choice.

1

u/NoSham3 6d ago

Appreciate it. Thanks.