Generator FAQ’s

1) What size generator do I need for my home?

Every home owner’s requirement is different. Your power plant will be sized on the electrical load it will be carrying. The size of your house does not matter nor the size service feeding your home. It all comes down to what you want to run during an outage. The only real answer is to have Home Power Systems provide a complimentary site assessment to recommend a proper solution to fit your specific requirements.

2) How much does it cost to install a generator?

See Home Power Systems What Does It Cost page to answer this question. We are the only company that lists real final costs to properly install your generator. The posted prices represent turn-key installed pricing including a two year maintenance contract. When you receive competitive pricing, be sure you compare the same scope of work and always get it in writing!

3) How loud is the generator?

The air cooled generators are all about 66db’s at 20 feet. What does this mean? It means you can have a regular conversation between two people standing next to a running air cooled generator. Remember, Generac has been manufacturing generators for 40 years; they are designed for residential neighborhoods.


4) Do the generators need elevated gas pressure to run?


If your Generac generator was installed before June of 2004, Yes, it does require between 11” and 14” of water column to run as designed on both natural gas and LP. The gas pressure supplied to your home is 6” of water column. Gas pressure must be elevated for maximum engine performance and to prevent stalling during applied loads. Unfortunately, many generators are installed with regular house pressure BEFORE June of 2004. This is unfortunate for when there is a power outage, the generators will most likely stall when an electrical load is applied. Call Home Power Systems for a complimentary inspection of your  Generac generator to see if it was installed correctly. Be sure your generator is not providing you a false sense of security! As part of every generator installation needing natural gas, Home Power Systems installs a regulator reducing valve to reduce the gas pressure back to 6” after supplying elevated pressure to the generator.


Every  Generac gas installation needs to look like this if it was installed before June 2004. If it looks different than this…’s wrong!! Notice the second gas reducing regulator on the load side of the meter.

All Generac generators manufactured after June 2004 do not require elevated pressure for natural gas. To verify this, review page 7, section 1.6, in the Installation and Owners Manual. This will tell you the fuel requirements of your generator. Fuel requirements for LP are still 11″-14″WC

5) How much service do the generators need once it is installed?

A commitment must be made to properly maintain this electrical generating device. This is not an air-conditioning unit or furnace that can go years with out service. You are generating electricity! Home Power Systems has on staff  factory certified and trained Generac, Kohler and Briggs & Stratton technicians that service and repair all standby generators. HPS follows the Generac 4.13 service programswhich include one site visit per year. See our maintenance pricing schedule for different programs.

6) How long do they last?

A properly maintained generator should provide over 20 years of operation under emergency standby conditions. Keep in mind that the air cooled units are not intended to provide continuous power (24 hours a day, 365 days a year).

7) How much does it cost a month to run the generator when it runs for 15 minutes a week?

Depending on the price of natural gas, it shouldn’t cost more than $4 or $5 per month to run the unit in test mode. During a power outage, under 50% load expect to pay less than $30/day for gas usage. A lot cheaper than a hotel room or spoiled food!

8) Was there a recall on the braided gas flex hoses?

Yes, all braided flex hoses that connected air cooled generators manufactured several years ago have been recalled. These hoses are no longer manufactured and have not been installed since 2004.

9) Why am I getting so many diverse answers on what is needed to install a generator?

It’s called a “spectrum of competence”. Most “generator guys” are deficient in experience, training and commitment to the industry. They are looking for the sale and install only. As the old saying goes, you get what you pay for. This is true for this industry as well. If you are looking for the cheapest price, please do not call Home Power Systems. If you are looking for the best value for the money, long term commitment, certified trained technicians and the peace of mind that your generator will start during the most important time for you and your family, HPS is the only authorized dealer for you.

10) How long will it take for me to get my generator if I order on the internet?

Once your order is placed, and if the generator is in stock, delivery to your home is only about 7-10 business days. If we need to order from the factory, lead times are about 2-3 weeks for all air cooled generators. Liquid cooled generators are shipping in about 4-6 weeks. Expect these lead times to change depending on national weather conditions and factory production schedules.

11) Do you have any generators in stock?

Yes, Home Power Systems is one of the largest stocking dealers in the North East. We do keep stock of most generators and transfer switches. Please call us toll free 1-877-421-0203 and a service representative can check our inventory. We also order generators daily and can ship your order as soon as possible.

12) What size generator do I need?

If you are running more than one central air conditioning unit, try our 20 or 22kw air cooled generator. Furnace, sump pump, fridge, general lighting, and microwave would require a smaller air cooled generator.

13) What is the status of my generator order?

Please feel free to call the HPS toll free order status line at 1-877-421-0203. A customer service representative will provide you status of your order

14) What fuel supply do I need to run one of your generators?

All Generac, Kohler and Briggs & Stratton home standby generators can be fueled by either Liquid Propane (LP) and Natural Gas. Portable generators are designed to be fueled by gasoline only.

15) Can you install the generator for me?

Yes, if you are in the Rochester or Syracuse, New York area we can perform turn-key installation services. Click here for our installation territory.  If you are outside this area, please go to and select the “Find a Dealer” tab. Input your zip code and dealers that support your area will be listed.

16) How big and how heavy are these generators?

Air Cooled: 48” long 24″ deep 28″ high, weigh between 350 and 600lbs.

Liquid Cooled: 73″long, 28″ deep, 43″ high, weight is about 1000lbs

17) Does your price include delivery?

Yes, all of our pricing includes free standard shipping (NOT POWER LIFTGATE DELIVERY $130), residential  delivery to your home for air cooled generators and most liquid cooled generators as well. All liquid cooled generators, 27kw and larger, include shipping but power lift gate delivery is not available. All prices quoted are the final billable costs to your credit card. No hidden charges here! Shipments to California will incur an additional 10% internet tax fee and many liquid cooled generator do not meet California emission standards.

18) Will someone call me before my generator is delivered?

Yes, the freight company will call you and schedule a delivery time that is convenient for you. if necessary, the freight company will hold your generator for up to 2 weeks if you are on vacation.

19) Does my generator come with a battery?

Only the UltraSource portable generators ship with a battery. None of the Generac home standby generators ship with a battery. Home Power Systems recommends the Interstate Megatron, 75month battery, group 26 for both the air cooled and liquid cooled HSB generators.

20) Do I have to pay sales Tax?

Yes, unless you are a reseller and provide tax exempt documentation.