Generac 5735 GP17500E Portable Generator

Generac 5735 GP17500E Portable Generator


Overall Rating
Surge Increase (Wattage)
Fuel Efficiency
Running Time
Fuel tank Capacity

If you’re looking for a powerhouse of a generator for powering up to 16 circuits, a job site, or a 5-ton air conditoner, then the Generac 5735 GP17500E is what you need.

It is the largest portable generator in Generac’s line up of generators and can supply enough power to back up your entire house or commercial business if you are ever caught in a power outage. If you are looking for a multi-use portable generator, this takes the title as best home generator and best portable generator.

Fuel Type, Efficiency, Capacity and Run Time

The Generac 5735 GP17500E uses unleaded gas.  It has a 16-gallon fuel tank that provides users with a run time of 10 hours when used at 50% capacity.  The tank is huge, but this particular model is not the best at fuel efficiency and has a shorter run time than a few of its competitors.  Despite these drawbacks, the power this unit has is so exceptional that you never need to choose which of your electrical items to power; you can power ALL of them.  For anyone who works at home or for anyone using their generator to power their small business, access to a standby power source is critical in the event of a power outage.

Oil Information

You will need to add oil to your generator when you get it.  You should use SAE 30 weight oil for temperatures above 40 degrees. Below 40 degrees use a 10W-30 down to 10 degrees and then use a synthetic type below that.   Your generator is equipped with a low oil shutdown in case the oil level drops below a certain level. This protects the engine from getting permanent damage.

Make sure you read the owner’s manual for your portable generator so you can follow the maintenance tips regarding checking and changing the oil. Typically you should check it every 8 hours of run time and change it every 50 hours but if you’re powering heavy loads for extended periods of time, these time frames may need to be more frequent.  This information will be in the owner’s manual for your convenience.

Noise Level

The low tone muffler that the Generac 5735 GP17500E has keeps the generator running at a comfortable noise level that is not too disruptive.

Even though Generac doesn’t have decibel levels listed, the general consensus is that the noise that the generator produces is tolerable.

Users can get the Walker Quiet flows muffler and Walker exhaust tubing to make the unit run even quieter if they think it is an issue.

Wattage (continuous and maximum)

Generac 5735aYou will be pleased with the tremendous power that this portable generator gives you.  You will get continuous running watts of 17,500 with a surge watt maximum of 26,250 that is for the startup of the items you have attached to it to keep running. The A/C voltage is 120/240 and it has a frequency of 60 HZ.

You will be able to power security systems, stoves, AC units, sump pumps, major power tools including belt sanders, saws and even things such as stereos, lights, and electric grills.  Basically, you will have the power to run an entire household.  Keep in mind that you will need a transfer switch to connect to air conditioning systems.

Other Features

The Generac 5735 GP17500E has a list of features that users love and will appreciate when it comes time to use it. These features include:

  • Electric start
  • Full tubular handles (don’t fold down)
  • Heavy duty, never flat wheels
  • Generac OHVI engine with pressure lubrication
  • Idle control for better fuel efficiency
  • Integrated lifting eye
  • Hour meter
  • Low tone muffler
  • Circuit breaker protection on all outlets
  • Low oil shutoff
  • Fuel gauge


Users will get a 2-year limited warranty for their Generac 5735 GP17500E portable generator.  It will cover all defects in parts and workmanship and also cover any labor costs involved in replacing them.  The warranty covers the engine and the alternator and is available ONLY to the original purchaser of the generator. Even if you sell it, the warranty is not valid for the new owner.  Commercial users get a one-year limited warranty after the date of purchase.

What are Customers Saying?

Reading comments and feedback from customers who have purchased the Generac generator is a great way to get some inside information about its performance and strengths as well as any weaknesses they notice. It’s information that is not available on selling sites and gives you a lot of insight into the quality of the product.  Here are a few comments from customers who have purchased this portable generator.

Emergeny Generator

If you are interested in how this portable generator can be used as a standby generator, then I recommend you watch the video below. The short demo will give you a great idea of how the Generac GP 17500E can be used as an emergency generator.


The Generac 5735 GP17500E   is a true powerhouse of electrical power supply that can take care of powering your entire home in the event of a power outage.  Having the capability to power your whole home when the majority of others are sitting in dark houses can give you a feeling of well being and peace that is hard to beat. Tons of features, tons of power, you won’t be disappointed with this portable generator.  Whether you need it for a business or to make your home a safe haven regardless of the weather, you will find it is worth the money.

For more Information and to order yours, Click the Link below:

Generac 5735 GP17500E Portable Generator