System Diagnostic Active

Your ApplianceIsn't Broken.It's Misunderstood

Same-day expert repair across Greater Boston — or we teach you what's actually wrong first.

Serving:SomervilleBrooklineCambridgeQuincyBraintreeJamaica PlainDorchesterSouth Boston
Scroll to diagnose
Male appliance technician in work uniform standing in a kitchen
Mike Callahan
Refrigeration Specialist · 14 yrs
Compressors & Sealed Systems

Mike can tell a failing compressor from a bad start relay by the sound alone. He's pulled apart Frigidaire, LG, Samsung, and GE sealed systems in triple-deckers from Dorchester to Quincy.

i.

Listen First

A healthy compressor hums at 60Hz. A clicking startup followed by silence = overload relay. We carry 40+ relay variants on the van.

ii.

Pressure Test

Sealed system pressure tells us if it's a refrigerant leak vs. a mechanical failure. Leak = $280–$420. Compressor swap = $380–$580.

iii.

Control Board Check

Modern fridges run inverter boards. A bad inverter mimics compressor failure. We test before condemning the compressor — saves you $200.

Female technician with tools examining a washing machine
Dana Reyes
Washer & Dishwasher Tech · 9 yrs
Error Codes & Control Systems

Dana memorized 300+ error codes across Samsung, Whirlpool, Bosch, and LG platforms. She built a lookup tool that cross-references symptoms to root causes — not just the code.

i.

Read the Code

Samsung 5E? Could be drain pump, pressure sensor, or wiring harness. The code is a starting point, not a diagnosis. We go three levels deeper.

ii.

Isolate the Circuit

Control board failures account for only 12% of error codes. Most are mechanical — lid switches, door latches, pump impellers. We test the cheap parts first.

iii.

Drain & Inspect

A blocked drain filter causes 40% of F21/5E/OE codes. We clear it in 20 minutes. Parts: $0. Labor: one hour flat rate.

Male repair technician working on a dryer appliance
Chris Andrade
Dryer & Range Specialist · 11 yrs
Thermal Systems & Ignition

Chris has replaced 600+ thermal fuses and rebuilt more gas igniter assemblies than he can count. His decision tree for dryer no-heat calls is down to four questions.

i.

The Four Questions

Does it tumble? Does it heat at all? Electric or gas? How old is the lint trap? Four answers narrow the fault to one of six components.

ii.

Thermal Fuse First

Thermal fuses fail when airflow is restricted. $18 part, 30 minutes labor. But if we don't fix the vent restriction, it blows again in 6 months. We fix both.

iii.

Gas vs. Electric

Gas dryer no-heat: 70% igniter, 20% gas valve coils, 10% thermal limiter. Electric: 60% heating element, 25% thermal fuse, 15% cycling thermostat.

Appliance Coverage

We work on the appliances
your tenants actually own.

From 2006-era Whirlpool stacks in triple-deckers to brand-new Samsung French-door fridges — if it runs in a Boston kitchen or laundry room, we've seen it fail.

🧊

Refrigerators

Samsung · LG · Whirlpool · GE · Frigidaire
Most common call: fridge warm, freezer cold.
Typical repair
Compressor relay replacement
$120–$580
45–90 min
🫧

Washers

Samsung · LG · Maytag · Speed Queen
Error code E2/5E? 60% chance it's the filter.
Typical repair
Drain pump or control board
$95–$380
30–75 min
♨️

Dryers

Whirlpool · GE · Maytag · Samsung
No heat? We fix the fuse AND the vent.
Typical repair
Thermal fuse + vent clearance
$80–$260
30–60 min
🍽️

Dishwashers

Bosch · KitchenAid · Whirlpool · Miele
Typical repair
Door latch or control board
$110–$420
45–90 min
🔥

Ovens & Ranges

GE · Samsung · LG · Frigidaire
Typical repair
Igniter or bake element
$90–$320
30–60 min
Property Manager Program

Managing 3+ units? We offer priority dispatch, consolidated invoicing, and a direct line to the tech — no hold music, no ticket queue.

Set Up Account
Verified Reviews

Real calls. Real fixes.
Real Boston kitchens.

Middle-aged male property manager in a button-down shirt
Samsung RF28 Fridge
"Mike showed up at 11am, had the compressor relay replaced by noon. Tenant didn't even lose the groceries. I manage 14 units — Diagnose is the only number I call."
Tom Deluca
Property Manager, Somerville · Deluca Property Group
14
Units managed
3yrs
With Diagnose
South Asian woman smiling in a bright kitchen
LG WM3900 Washer
"Dana figured out the 5E error was a clogged filter in ten minutes. My previous repair guy condemned the pump and quoted $380. She fixed it for $95. I felt like an idiot for not calling sooner."
Priya Mehta
Homeowner, Brookline
$95$
Total cost
$285$
Saved vs. quote
African American man in casual attire smiling confidently
Whirlpool WRF535 Fridge
"Fridge died the night before my daughter's birthday party. I called at 7pm, Chris was there at 8:30, fixed by 9:15. Cake survived. I've told every parent in her class."
Marcus Williams
Homeowner, Jamaica Plain
75min
Start to finish
9pm
Fixed by
Schedule a Tech

We've already diagnosed it.
Now let's fix it.

Two vans, seven days a week. Same-day arrival in most of Greater Boston. We show up with the part 80% of the time — because we've seen this failure before.

Same-day dispatch in most zip codes
🔧Parts stocked for 200+ common failures
📋Flat-rate labor — no surprise invoices
90-day parts & labor warranty
Or call directly
(617) 555-0147
Book a Tech