Infinity Coach

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Infinity Coach Infinity Coach is devoted to be your motor-coach provider. We are committed to the creation of quality and affordable custom work.

Whether it’s a complete package or just a few minor updates. Our experienced techs are here for you! Infinity Coach is a family owned and operated business, we became incorporated in March, 1999. Our business began in 1990 providing RV repairs and restorations; with our honesty, hard work and dedication to the customer we quickly grew into the premier custom conversion facility for Washington! With over 27 years experience in building custom homes, commercial buildings and exclusive remodeling and renovations, the transition to motor coaches and RV’s was a natural bloom for us. Our dedication, expertise and commitment to quality and service are unparalleled and we take pride in our reviews reflecting this. Please feel free to message us or call us and we will ALWAYS get back to you.

07/07/2026
This '23 Renegade Classic electrical system just hasn't preformed since new. So along with a solar & battery upgrade we ...
01/22/2026

This '23 Renegade Classic electrical system just hasn't preformed since new. So along with a solar & battery upgrade we jumped into the inverters and figured some issues out.
First we removed the existing 3 - 200 watt panels that were just randomly placed, filled and patched the mounting holes and repositioned the OE panels along with adding 6 - 250 watt
RICH SOLAR MEGA 250 PRO panels to create a 2100 watt array, ALL glued down - No holes put in the roof other then where the wires pass thru. Each system is controlled with a Victron charge controller, 100/50 for the 600 watt array and a 150/85 for the 1500 watt array.
Next was taking out the 3 8D AGM batteries with 495 usable AH's and replacing with 2 Epoch 460 V2 lithium batteries (920 usable AH's) along with communicating with the Victron system under external control.
Lastly we dug into the wiring and found some interesting points. These inverters are set up split phase and investigating found the wiring size was undersized to & from the inverters for full potential. Thus some of the issues the owner was experiencing with breakers randomly tripping. 10AWG to the inverters and 8AWG from the inverters along with single pole circuit breakers for a split phase system with a 30amp to and a 40 amp from inverters is what factory installed. We pulled out that wiring and installed 6AWG both ways along with correct double pole 50 amp breakers protecting in & out of the main and sub panel.
During testing we found the balance was way off putting almost everything on Leg 1 and pretty much nothing on Leg 2. Only 1 roof top heat pump unit (center) was previously on the sub-panel (Inverter panel) and during testing was noticing that one unit would flash overload for a split second. Making sure no other loads were on, just turning the center AC unit on for cool I'd get a quick overload flash of the LED. Then switched to HP and oh boy the overload would stay on for IDK 2-3 seconds but worse yet the inverters would go into a really loud grunt, pop, bang! Whoa - no good. Jumped up on the roof and holy SH*T there's no soft starter on the unit!!! Pulled some easy starts off the shelf and installed one in each unit! Afterwards we added the bedroom into the sub-panel on the other leg and now turning on both units at the same time there is no overload flash, no grunting and definitely no pop or bang!!
All of this is how the coach came from factory, no modifications where made before we got our hands on this coach.

Sometimes you need to stand out!
04/12/2025

Sometimes you need to stand out!

Stacker trailers need love too! Solar is a great way to keep the batteries charged year round. We do many upgrades on al...
10/16/2024

Stacker trailers need love too!
Solar is a great way to keep the batteries charged year round.

We do many upgrades on all enclosed trailers!

Re-skin, electrical, tie down mounts, cabinetry, Awnings, just to name a few.

Something you’re wanting or needing done give us a call!

Infinity Coach
(253) 891-0879

JR racers…. Just got a fresh batch of Fuel Factory M1 methanol in today! 5 gallon pails Call me or Don SeftonMessenger w...
08/15/2024

JR racers…. Just got a fresh batch of Fuel Factory M1 methanol in today! 5 gallon pails

Call me or Don Sefton

Messenger works too!!

Customer arrived with a mess of an install by a dealer. No protection, undersized cabling, lack of ventilation, etc… It ...
07/31/2024

Customer arrived with a mess of an install by a dealer. No protection, undersized cabling, lack of ventilation, etc… It would only run the roof top A/C unit for a couple minutes before faulting out.
So we took it all apart, fixed everything and just ran the A/C for 7 hours and it was still going but plugged it in to go home!

F110 Fuel Factory drum available. Just came in 2 weeks ago. Unopened, factory sealed. Sitting in our shop on a pallet. (...
07/11/2024

F110 Fuel Factory drum available. Just came in 2 weeks ago. Unopened, factory sealed. Sitting in our shop on a pallet.
(Picture for attention)

Special one time offer as the customer backed out. No shipping charge! Tax included.
Special price $650 OTD

WOW! This is a full Victron electrical system with 3 Battle Born Gamechanger Lithium batteries (270 AH each / 810 AH tot...
04/12/2024

WOW! This is a full Victron electrical system with 3 Battle Born Gamechanger Lithium batteries (270 AH each / 810 AH total) and 1600 watts of Rich Solar 24v panels. With this setup you can run the roof top air conditioner and keep the coach at a comfortable temperature! (yes, it has soft starter's on the A/C's) Running thru testing today, I saw the solar go over 850watts. Not to bad for a early spring day! We use our own custom panel mounts that make it easy to remove (unbolt) for cleaning, service or replacement. Hopefully only cleaning!!

If your looking to upgrade any part of your system or replace and upgrade your entire system - Give us a call or stop by and we can discuss any thoughts or needs you have!

Infinity Coach
(253) 891-0879

Ready for solar? We can build you a nice basic system to an extremely large system. Give us a call to discuss or stop by...
04/04/2024

Ready for solar? We can build you a nice basic system to an extremely large system. Give us a call to discuss or stop by and we'll help you figure out your needs!

Address

1710 Fryar Avenue, Ste 105
Sumner, WA
98390

Opening Hours

Monday 8:30am - 5pm
Tuesday 8am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12538910879

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