JANTECH
Mobile Services
Mobile Air Conditioning Recharge & Diagnostic.
A/C blowing warm? We come to your driveway, shop, farm, or job site and fix it on the spot. Cars, trucks, RVs, tractors, and equipment — diagnosed, leak-tested, and recharged the right way.
Serving Coldstream, Armstrong, Kelowna, Lake Country, West Kelowna. Lumby, Enderby, Falkland: extended area, additional travel.
May–October · Mon–Fri 8am–6pm · Replies within the hour during business hours.
On-site A/C recharge — Okanagan farm
Nitrogen leak test · vacuum evacuation · refrigerant charged by weight
Sound familiar?
If your A/C is doing any of these, you're in the right place. Most are one-visit jobs.
A/C blowing warm air
Most common cause: low refrigerant from a slow leak. We find the leak and tell you exactly what it needs before any recharge.
A/C blows cold then warms up
Often a clogged expansion valve, faulty pressure switch, or partial blockage. We diagnose on-site.
A/C smells musty or sour
Mould on the evaporator core. Ozone treatment fixes the smell at the source — not just covers it.
A/C is making noise
Squealing belt, failing compressor clutch, or low refrigerant. We isolate the cause before adding parts.
Water on the floor
Plugged evaporator drain. We clear it and check for cabin filter contamination.
Just had a repair, A/C still bad
Common after a shop replaced a part but didn’t vacuum the system properly. We finish the job right.
Tractor / equipment A/C dead
We come to your farm or job site with a generator. No need to drive the equipment anywhere.
RV A/C not cooling
Dash A/C, roof A/C, or both. We service them at your storage spot or campground.
Classic / older vehicle
R12 retrofit to R134a, custom hoses, and the patience to do it right on a vintage system.
John on-site — Vernon-area job
One operator. Aviation-trained. Shows up.
I'm John. JANTECH is one person — me — with a truck full of professional refrigerant equipment. I spent 31+ years as a Transport Canada licensed Aircraft Maintenance Engineer working on Boeing 737s and Dash-8s. The same diagnostic discipline aviation requires is what I bring to your driveway.
When you call, you reach me. When I show up, it's the same person. No call centre, no dispatch, no service writer reading from a script.
5.0 on Google · 4 reviews
Real reviews from real customers around the Okanagan.
“5-stars to John for the mobile AC recharging in Vernon! Awesome service and pricing.”
“Excellent service! John is very professional and knowledgeable. Everything is working great!!”
“Had an issue with my A/C (Nissan Frontier) not blowing a lot of cold air. Had John from JanTech come out to look at it. Sorted it out and the truck is blowing cold again.”
“Highly recommend John for mobile HVAC services in Vernon. The customer service and quality of work were top-notch.”
Already paid a shop, still blowing warm?
It's the call I get most often in July. Here's why — and what I do differently.
The shop didn’t vacuum deep enough.
Most general repair shops run a vacuum pump for 30 minutes and call it done. Without a micron gauge they can’t measure the actual vacuum level. Moisture stays in the system, turns the refrigerant oil acidic, and quietly destroys the new compressor over the next 1–2 years.
No nitrogen pressure check before charging.
Without nitrogen pressure testing, there’s no way to confirm the system is sealed before refrigerant is added. If a small leak is missed at this step, the refrigerant just leaks back out over the season — and the customer’s back where they started, often blaming the new part.
Nitrogen test → deep vacuum → weighed charge → leak verify.
Every job: nitrogen pressure test confirms the system is sealed before any refrigerant is loaded. Deep vacuum to ≤1000 microns measured on a Fieldpiece micron gauge. Refrigerant weighed in to the OEM gram spec. Electronic leak detector confirms no leaks after charging. Pressure graphs emailed to you.
What happens when I arrive.
No surprises. No "we'll see when we get there." Same procedure on every vehicle.
Diagnose on-site
I show up with the full kit. Pressure-test the system, find any leaks, check the oil condition. You get the answer before any refrigerant is loaded.
Do the job properly
Nitrogen pressure test to confirm the system holds. Vacuum to ≤1000 microns to remove moisture. Charge refrigerant by weight to the manufacturer spec. If a leak is found, I document it and tell you what’s needed before the system gets charged.
Verify and document
Electronic leak scan after the charge. Pressure graphs emailed to you for your records. You drive away with cold air and proof of what was done.
Want the full 4-step technical procedure?
Nitrogen Pressure Test
Verify the system holds pressure with dry nitrogen before touching any refrigerant. If it leaks, we find it now — not after paying for refrigerant.
Deep Vacuum Evacuation
Pull vacuum to 1000 microns or below — measured with a Fieldpiece micron gauge, not a timer. This removes moisture, air, and non-condensables that destroy compressors.
Charge by Weight
Refrigerant loaded to the OEM gram spec on calibrated digital scales — not by pressure, sight glass, or feel.
Leak Verification
Electronic leak detector scans every fitting and component to confirm no leaks after charging. Pressure graphs emailed to you.
Fieldpiece SMAN + micron gauge
Vacuum confirmed — 342 microns
Decay hold — zero leaks
Why not just take it to a shop?
A proper vacuum isn't about running a pump for 30 minutes — it's about measuring microns. And before any refrigerant goes in, the system needs a nitrogen pressure check — the step most shops skip.
Typical Repair Shop
- No nitrogen pressure check before adding refrigerant
- Pulls vacuum for a set time — no micron measurement
- No vacuum decay hold test before charging
- No electronic leak detection after charging
- No pressure or vacuum data emailed to you
JANTECH Mobile Services
- Nitrogen pressure check before any refrigerant is loaded
- Vacuum measured to ≤1000 microns with Fieldpiece micron gauge
- Vacuum decay hold test confirms no leaks before charging
- Refrigerant charged to OEM spec by weight
- Electronic leak detection after every charge
- Graphed pressure data emailed to you after every job
- HRAI SCDD certified — 31+ years precision maintenance experience
Where I drive.
Vernon · Coldstream · Armstrong · Kelowna · Lake Country · West Kelowna
Lumby · Enderby · Falkland
Salmon Arm · Sicamous · Penticton · Chase · further for fleets, equipment, and vintage.
Not sure if you're in the area? Call (250) 351-6766— I'll tell you straight.
One call. Cold air. Usually this week.
The correct final step costs a fraction of a replacement compressor.
Vernon-based. Serving Coldstream, Armstrong, Kelowna, Lake Country, West Kelowna · Lumby, Enderby, Falkland (extended area, additional travel).
May–October · Mon–Fri 8am–6pm · Text or call · Cash · E-Transfer · Square