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Greater Houston area

Home backup generator rental in Houston, TX

A typical home backup during an outage setup needs about 4–6 kW, usually a portable generator (inverter if noise matters). Adjust the list below to your equipment, then compare 20 Houston providers that fit.

Free sizing tool

What size generator do I need?

Pick what it's for, adjust what you'll power, and get a size range from published wattage tables. Confirm the final size with the rental company.

🤫 Quiet needed
What you'll powerWatts each (running)Qty
Refrigerator
Champion Power Equipment · starts at up to 1,200 W
150–400
1
Freezer
Champion Power Equipment · starts at up to 1,000 W
100–500
0
Sump pump, 1/2 HP
Champion Power Equipment · starts at up to 2,150 W
800–1,050
0
Well pump, 1/2 HP
Champion Power Equipment · starts at up to 2,000 W
750–1,000
0
Well pump, 1 HP
Champion Power Equipment · starts at up to 4,000 W
1,000–2,000
0
Window AC, 10,000 BTU
Champion Power Equipment · starts at up to 2,400 W
900–1,200
1
Central AC, 3 ton
Champion Power Equipment · starts at up to 6,000 W
3,000–3,500
0
Furnace fan, 1/2 HP
Champion Power Equipment · starts at up to 1,600 W
300–800
0
Microwave600–1,200
1
TV (32"–55")80–400
1
LED light bulb (each)8–15
6
Internet router / modem10–20
1
Phone / laptop charger (each)20–100
2
CPAP with heated humidifier60–120
0
Space heater750–1,500
0
Electric water heater3,000–4,500
0
Washing machine
Champion Power Equipment · starts at up to 2,300 W
500–1,000
0
Estimated generator size
4–6 kW

Running load 1,828–3,510 W, plus 1,200 W for the largest start-up surge, plus a 20% buffer.

Type
Portable generator (inverter if noise matters)
Fuel
Gasoline, propane or dual-fuel (ask what the unit takes)
Ask for
  • Transfer switch installed by an electrician if you want to power house circuits (never backfeed through an outlet)

This is an estimate from published averages, not a quote. Give the rental company your actual equipment list (labels show watts) and confirm the size. How we calculate

58 Houston providers that may fit · size stated on their site ✓, or right unit type with size not stated
Get a shortlist of Houston companies by email

We're a free matching service. We don't own or rent generators. We'll email you the listed rental companies that fit 4–6 kW, with their own contact details. We don't pass your request to any company.

Need deliveryUrgent / outage

20 Houston providers for home backup during an outage power

FAQ

What size generator do I need for a home backup during an outage?

For the default setup below (1 × refrigerator, 1 × window ac, 10,000 btu, 1 × microwave, 1 × tv, 6 × led light bulb, 1 × internet router / modem, 2 × phone / laptop charger), published wattage tables give a running load of 1,828–3,510 W. Adding the largest start-up surge and a 20% buffer gives about 4–6 kW. Confirm with the rental company using your actual equipment list.

Which Houston rental companies fit?

20 Houston-area providers in our directory state something on their own website that matches this use (unit type, events, construction or residential service). Sizes are quoted on each provider's page.

Other uses in Houston: Wedding · Backyard party · Large outdoor event / festival · Food truck / vendor booth · Construction site · RV / camping