Sue Shiwdin

Test cocks, shut off valves, and vacuum breaker to a lawn sprinkler irrigation system

Plumbing

What the 2024 IPC’s Backflow Rules Actually Require

Every plumber has installed a backflow preventer without thinking twice about it. Fewer can say…

Sue ShiwdinSeptember 9, 2026

Heating & Cooling

How to Reset a Honeywell Home Thermostat (All Models)

A Honeywell Home thermostat that won't respond, holds the wrong temperature, or refuses to connect…

Sue ShiwdinSeptember 9, 2026

An HVAC technician inspecting and clearing a condensate drain line

Heating & Cooling

How to Maintain and Troubleshoot an AC Condensate Drain Line

Summer shutdowns love a clogged condensate drain line. Not because the repair is complicated. Usually because…

Sue ShiwdinSeptember 3, 2026

shower faucet details and adjustable wrenches on white ceramic shower tray

Plumbing

How to Replace a Shower Valve

A shower valve that drips behind the wall, runs scalding hot when the toilet flushes,…

Sue ShiwdinSeptember 2, 2026

Electrical

Three Quiet Code Changes That Will Show Up on Your Next Inspection

Every code cycle brings changes that sound minor in a summary and matter a great…

Sue ShiwdinAugust 28, 2026

A technician using a refrigerant recovery machine connected to an HVAC system

Heating & Cooling

The R-410A Service Window Contractors Can’t Afford to Waste

The refrigerant transition feels finished: R-32 and R-454B are standard in new equipment, and last…

Sue ShiwdinAugust 27, 2026

Repairman washing dirty compartments air conditioner

Heating & Cooling

How to Clean AC Condenser Coils for Peak Cooling Performance

A dirty condenser coil doesn't announce itself. The system still runs. The air still comes out cool, at…

Sue ShiwdinAugust 27, 2026

Water leak sensor alert, smart water sensor can automatically shut off a solenoid valve.

Plumbing

Why Plumbers Are Adding a Smart Shutoff Valve to More Jobs

A pinhole leak behind a washing machine used to mean a soggy subfloor and an…

Sue ShiwdinAugust 26, 2026

TradeMaster Positioning a Mini-Split Air Conditioner and Heat Pump on an Equipment Pad

Heating & Cooling

What Is a Heat Pump and How Does It Work?

Most heating equipment makes heat. A heat pump does something more interesting: it moves heat…

Sue ShiwdinAugust 25, 2026

technician is using a manifold gauge to check the refrigerant in the system

Heating & Cooling

How to Measure Superheat and Subcooling to Verify Refrigerant Charge

"Low on refrigerant" is the wrong diagnosis made too often. A system with low suction…

Sue ShiwdinAugust 20, 2026

Sue Shiwdin

What the 2024 IPC’s Backflow Rules Actually Require

How to Reset a Honeywell Home Thermostat (All Models)

How to Maintain and Troubleshoot an AC Condensate Drain Line

How to Replace a Shower Valve

Three Quiet Code Changes That Will Show Up on Your Next Inspection

The R-410A Service Window Contractors Can’t Afford to Waste

How to Clean AC Condenser Coils for Peak Cooling Performance

Why Plumbers Are Adding a Smart Shutoff Valve to More Jobs

What Is a Heat Pump and How Does It Work?

How to Measure Superheat and Subcooling to Verify Refrigerant Charge

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