Oil Change on a Generac 20KW Located in Manhasset, NY
Consider Mohrmann Electric your trusted partner for top-notch generator services in Manhasset, NY, and the surrounding areas. We specialize in providing comprehensive maintenance and oil change solutions for your Generac 20KW whole house generator. With years of experience in the industry, we are your go-to choice for ensuring the seamless and reliable operation of your generator.
Why Generator Maintenance Matters
Your Generac 20KW whole house generator is a vital lifeline during power outages, ensuring uninterrupted power supply to your home. Just like any other machinery, regular maintenance is essential to keep it performing at its best. Neglecting maintenance can lead to:
Reduced Efficiency: Over time, dust, dirt, and grime can accumulate in your generator's components, leading to reduced efficiency and increased fuel consumption.
Unreliable Performance: Without proper maintenance, your generator might fail to start when you need it most, leaving you in the dark during critical moments.
Costly Repairs: Small issues left unaddressed can escalate into major problems, resulting in costly repairs down the line.
Shortened Lifespan: Regular maintenance helps extend the lifespan of your generator, providing you with years of dependable service.
Our Oil Change Service
One of the most crucial aspects of generator maintenance is regular oil changes. The oil in your Generac 20KW generator plays a vital role in lubricating moving parts, reducing friction, and dissipating heat. Over time, oil can become contaminated, leading to decreased performance and potential damage. Our expert technicians at Mohrmann Electric offer specialized oil change services that include:
Thorough Inspection: We start by inspecting your generator's oil level, quality, and overall condition.
Oil Drainage: The old, contaminated oil is carefully drained, ensuring a clean and efficient oil change process.
Oil Filter Replacement: We replace the oil filter to ensure proper filtration and optimal performance.
Fresh Oil Refill: High-quality, manufacturer-recommended oil is used to refill your generator, ensuring smooth operation.
Contact Us Today
Don't wait until the next power outage to ensure your generator is in optimal condition. Reach out to us at Mohrmann Electric for reliable generator maintenance, including expert oil change services for your Generac 20KW in Manhasset, NY. Contact us today to schedule an appointment or learn more about our comprehensive generator services. Your peace of mind is our priority!
Manhasset, NY at a glance
Mohrmann Electric & Generator has completed 25 jobs in Manhasset, NY between February 2026 and October 2026.
The 7 customer reviews shown here average 5.0 out of 5.
The most recent job was on October 16, 2026.
Mohrmann Electric & Generator has completed 35 jobs in Manhasset, NY in the last 12 months. The first job there was in June 2023.
Job Locations and Reviews
I performed routine maintenance on a 22KW Generac Generator, ensuring optimal performance. This included oil changes, filter replacements, and thorough inspections of all components.
Juan and Jonathan were professional and excellent in all respects. They completed a difficult job that required great skill.
Thank you for recognizing Juan and Jonathan's professionalism and skill, Howard. We're proud to have them on our team and delighted they successfully completed your difficult project to your satisfaction.
Run a new 80amp electrical line from basement to other side of the residence garage left tested and left it working
It was great setvice
Remove old ring camera and installed a new one also help Customer setting it up and connecting you to the Wi-Fi in his account, replace old decora beige gfci with a new one smelled burn, did a full maintenance on 13 KW general electric generator
Check oil levels and battery voltage drop Plandome New York
Tune up on generator check for gas leak oil, level air, filter, check, spark and compression, generator properly -yworking at time of service
First visit since we installed, customer stated that they lost power and the generator kicked over as it was supposed to ! Manhasset New york
Replaced battery and made a transfer 24Kw Manhasset New York
Replaced battery and made a transfer 24Kw Manhasset New York
Service call - unit was in overcrank . Replaced battery and POS/NEG battery terminals Manhasset New York
Service call- fairly low oil pressure switch caused unit to go into fault alarm (red Light) Manhasset New York
Adjusted time and cleaner battery terminals 26Kw Manhasset New York
Load tested battery and made a full transfer for a Thorough inspection of the Generac generator 20KW Manhasset New York
Jose was very helpful. He handled all the maintenance and then helped me reconnect the generated to my WiFi
We appreciate you taking the time to share your experience with Jose and are thrilled he provided excellent service with your maintenance and WiFi connection needs.
Great service! Very professional, answered all my questions, and did great work.
Thank you, JP! We're thrilled you appreciated our professional service and thorough answers. Your 5-star review means a lot to us, and we're committed to maintaining this standard of excellence for all your future needs.
Performed complete startup and commissioning of a 26kW air-cooled Generac generator. Established Wi-Fi connectivity and completed system setup. Verified proper automatic transfer switch operation under load conditions. Tested and confirmed gas pressure within manufacturer specifications. Conducted a full inspection of electrical components and communication wiring. System was tested for performance and left fully operational
I began by inspecting the vehicle's battery, ensuring it was securely mounted and free from corrosion. I then tested the battery's voltage and performed a load test to confirm its capacity to hold a charge. Next, I examined the spark plugs for any signs of wear, deposits, or damage. I cleaned the electrodes and gaps, ensuring they met the manufacturer's specifications. I also checked the spark plug wires for any cracks or fraying. After completing these tasks, I started the engine to verify that it ran smoothly and efficiently, confirming that the battery and spark plugs were functioning correctly.
I began by inspecting the automatic transfer switch to ensure it was functioning correctly. This involved checking the switch's operational status, verifying that it was set to the appropriate mode, and confirming that it was responding accurately to power fluctuations. Next, I examined the oil levels in the generator. This included opening the oil cap, using a dipstick to measure the oil level, and ensuring it was within the manufacturer's recommended range. I topped off the oil if necessary, ensuring the generator would operate smoothly. Throughout the process, I paid close attention to safety protocols, ensuring all equipment was handled properly and securely.
Conducted a comprehensive annual maintenance check on the electrical systems, ensuring all components were functioning optimally. This involved thorough inspections, testing, and calibration of various electrical devices and systems. Identified and rectified minor issues to prevent potential failures. Updated system logs and documentation to reflect the maintenance activities. Ensured all safety protocols were followed during the process. The work was completed efficiently, maintaining system reliability and performance.
Jonathan came to service my generator at my new home, first time. He was thorough in his explanation of how the generator worked to me as I've never owned one, as well as in inspecting the unit to ensure it will operate smoothly. I look forward to having him be my regular servicer for such an important piece of equipment at my house. I 100% recommend.
maintenance inspection on the generator, ensuring all components were in optimal condition. This included cleaning and lubricating moving parts,and verifying the integrity of electrical connections. full transfer test was executed to confirm the generator's ability to seamlessly switch to backup power.
Annual maintenance 27kw replaced starter and adjusted time on computer Manhasset New York
Maintenance
Annual maintenance 22Kw adjusted time on computer and checked for gas leaks Manhasset New York
Annual maintenance 22Kw adjusted time on computer Manhasset New York
Annual maintenance 20Kw adjusted time on computer Manhasset New York
Annual maintenance 24Kw adjusted time and checked ATS connections and voltages Plandome New York
Troubleshoot problem on generator,
Excellent service
Thank you for the 5-star review. We look forward to seeing you again on your next generator maintenance
Highly professional, impacted work area totally clean, skilled and quite knowledgeable, fees good