*The Angi rating for Generator Install companies in Mastic, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Mastic, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on December 25, 2025
Serving Mastic, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Small jobs welcome
Customers say: Quality work
"Cole is terrific, very polite, personable, efficient, Got the job done in a timely manner. Actually installed 2 ceiling fans. I would definitely hire Cole again, and I'll be sure to recommend him to others."
Serving Mastic, NY and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"We previously used TFC Electric to install an upgraded electric panel with a hookup to our generator. From connection on the pole to the generator outside the garage, the work was above professional! So we called them for some interior and exterior lighting. Wow -- they suggested that for a similar price, the exterior floods could also be security cameras and connect into our Ring doorbell system. (They also knew Google, Lutron, etc.) The installation of two (one high on a garage) was amazing -- and they connected the light/cameras (through wifi extender they suggested) into our cloud-based system, tuned perfectly! Then the front door grotty lights were replaced with superb fixtures -- with Hue lights to match our interior system -- at Christmas our front door glows green! And they fixed my botched job of a new fixture at the side door and a broken exterior ground fault outlet box. The interior chandelier was initially hung too high for our tastes, but professionally. They insisted on coming back and putting it where we wanted. Innovation -- while hooking up the garage floodlight, they noted no lights in the garage "attic", but for a small bit more they would install fixtures and a switch -- what a difference! What are you doing still reading this review -- call them! Angie's List sometimes yields treasures -- this discovery is one!"
+29
Serving Mastic, NY and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"The owner of the business is extremely personable and professional. He arrived on time did a perfect job along with team. Further, he took the time needed to explain to us how to switch over from public power to use of the generator. I will ask John to return for future upgrades to our home. I have every confidence you will do a great job."
+16
Serving Mastic, NY and surrounding areas
Approved
In business since 2016
Credit card accepted
Customers say: Quality work
"He was so good we gave him other work, install exhaust fan in bath, he will be coming back after he gets the parts"
Serving Mastic, NY and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Amazing. He was here several times, always arrived on time with all materials. Before every job the pricing was discussed and I paid exactly what was agreed upon with no surprises. The electrician was kind, considerate and caring and explained everything to me. He made suggestions and took the time to help me understand everything. I learnt this is a family business and being a small business owner myself It was such a pleasure to have him here. So many companies today you get no personalized attention. He was always reachable by email or phone. I would highly recommend him and will continue to use him."
Serving Mastic, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Emergency services offered
"JT Rose has worked on my home for several months. Anthony is by far one of the most dedicated/ fair/ and brilliant minds with the scope of work he has accomplished... Licensed electrical pane, all outlets new, 8 installed televisions, rewire the entire home, set up thermostats for a smart home, plus wire the entire premises... He is very honest and works as he would work on his own. Very reliable and keeps is word... My family is very happy and will continue using his services for very long time. He has been reccomend to others and they are truly happy .... thank you kindly for all you Anthony"
+29
Serving Mastic, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Offers commercial services
"Did an amazing job installing my ev charger. Same day quote next day service. Great communicator! My new go to electrician."
+13
Serving Mastic, NY and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"I was in need of updating electric panel for an older house. PMG Electric came to the rescue! They were prompt with response time, quick to assess the problem, and presented an estimate that was within my budget. Their customer service is excellent with exceptional follow up."
Serving Mastic, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Warranties offered
"Very professional. Clear estimate with thorough details and explanation of the job to be performed. Verified everything exceeded code and regulatory requirements. Clean and very professional installation. Careful and exacting workmanship. We will be hiring Matt again for more work we need performed."
Serving Mastic, NY and surrounding areas
Approved
Super Service Award Winner
In business since 1955
Free estimates
Customers say: True professional
"Dennis was prompt. Our stove was hardwired and we needed an outlet for the new stove. Dennis installed a 4 prong outlet and re-connected the old stove. The installation of the new stove should be trouble free. Dennis did an excellent job."
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Say goodbye to blackouts by learning how to install a generator transfer switch. By following our guide, you’ll have a solution to nonstop power.
Using a generator during a power outage is a lifesaver. Our guide will show you how to connect a generator to your house without a transfer switch.
Installing a portable generator can power key appliances during outages. Learn about the best backup generator questions to discuss with a pro.
