Kohler / Rehlko Install • Service • Repair
Built Like the Hospital Backup. Sized for Your House.
Kohler home generators — now sold under the Rehlko name — installed, maintained, and repaired across the Valley by licensed electricians who read the spec sheet all the way to the end.
- Licensed, Insured & Bonded
- 24/7 Emergency Service
- 4.7★ on Google
Kohler Generators in Phoenix
“People don't buy a Kohler to save money. They buy it so they never have to think about it again.”
Kohler made its name in kitchens and bathrooms, which is a strange résumé for a power company until you learn they've been building engines and generators for about a century. The same outfit backs up hospitals, cell towers, and data centers. In 2024 the energy side of the business took a new name, Rehlko. The generators kept their bones.
Owners pick Kohler for the engine and the build. It's a heavier, quieter, more commercial-feeling machine, and it tends to be bought by people who have already been burned once by something cheaper.
A machine like that deserves an install that matches. We do the load math, the transfer switch, the permit, and the first start — and we tell you plainly whether you need whole-house coverage or just the essentials. For the bigger decision, our guide on standby vs. portable generators in Arizona lays out the trade-offs.
Install & Service
Kohler Installs and Annual Service
One company, one schedule, one price you see before we start.
Install
Kohler units are precise machines. The install should be, too.
- Load calculation that accounts for Phoenix heat derating and AC start-up surge
- Pad placement that meets Kohler clearances, city setbacks, and HOA rules
- RXT automatic transfer switch installation and load-shed programming
- Natural gas or propane connection coordinated with a licensed plumber
- Permits, inspection, first start, and OnCue remote monitoring setup
Service
A Kohler will forgive a lot. It won't forgive old oil and a tired battery in August.
- Oil, filter, spark plug, and air filter service matched to run hours
- Battery and charger testing — replace before it fails, not after
- Controller fault-history review and exercise settings
- Transfer switch inspection and under-load transfer test
- OnCue connectivity check so the app is telling you the truth
Repair
When Your Kohler Acts Up
When a Kohler throws a fault, the controller keeps a record. We read it before we guess.
Fails to start during exercise
Weak battery, fuel supply restriction, or an ignition fault — the controller log usually narrows it down.
High engine temperature shutdown
Blocked airflow, debris in the enclosure, or low coolant on liquid-cooled models. Heat makes this one common here.
Low oil pressure fault
Low oil, wrong viscosity, or a failing sender.
OnCue shows offline
Usually Wi-Fi or a network change — occasionally a controller communication fault.
Generator runs, power never transfers
Transfer switch, utility-sense wiring, or a tripped breaker between the two.
Kohler or Rehlko — Which Is It?
Both. Kohler's energy business became Rehlko in 2024, and newer units carry the new name. Parts, service, and the engineering lineage are the same. If your paperwork says one and the machine says the other, you're not imagining it.
Pair It With the Rest of the System
A premium generator feeding a tired panel is a sports car on bald tires. If your home still has its original panel, consider a panel upgrade alongside the install. Add whole-home surge protection while you're at it — monsoon lightning doesn't care what brand you bought.
Kohler Installs Across the Valley
Licensed electricians covering metro Phoenix. Pick your city for local generator details.
Other Brands We Install & Service
Generac Generators
The standby generator most of your neighbors own — installed, serviced, and fixed right.
Briggs & Stratton Generators
A name you've pulled a cord on for decades — now standing by at the side of the house.
Cummins Generators
The truck-engine people make a quiet home generator. We install it the way they'd want.
Champion Generators
Value-priced standby and dual-fuel portables — installed and hooked up the safe way.
Honda Generators
The quietest portables on the block — connected to your home the safe, legal way.
Westinghouse Generators
Big dual-fuel portables with remote start — wired to your home the right way.
FAQ
Kohler Generator Questions
Yes. Rehlko is the new name for Kohler's energy business. We install, service, and repair both the Kohler-branded and Rehlko-branded home standby units.
For owners who want a commercial-grade engine and a quieter machine, often yes. For a budget build, other brands may fit better. We'll quote options side by side and tell you which we'd put on our own house.
With the right size and load management, yes. We calculate your actual loads, including the AC's start-up surge, before recommending a model.
The on-site work usually takes one to two days. Permits and the gas connection add lead time, which we schedule and coordinate for you.
Yes. We'll read the fault history, diagnose the problem, and give you an upfront price before any repair.
Get Your Kohler Handled
Upfront pricing, permits handled, and 0% financing on approved credit. Book online or call — a real person answers.