Sue Shiwdin

Mounting a modern tankless gas water heater

Heating & Cooling

Gas vs. Electric, Indoor vs. Outdoor, Brand vs. Brand: How to Choose a Tankless Water Heater

Choosing a tankless water heater sounds simple until the questions start stacking up. Gas or…

Sue ShiwdinOctober 20, 2026

Electrical

Data Centers Are Reshaping Electrical Contracting for Everyone, Not Just Data Center Crews

A contractor who has never set foot on a data center jobsite is still feeling…

Sue ShiwdinSeptember 25, 2026

Tradesmen carrying an HVAC unit during installation

Heating & Cooling

The A2L Refrigerant Transition Is Raising the Bar on Installation Practices

R-410A allowed a fair amount of margin for error. A duct run sized slightly small,…

Sue ShiwdinSeptember 24, 2026

TM inspecting a Hydronic Circulator Pump

Plumbing

How to Diagnose and Replace a Hydronic Circulator Pump

Most circulator pumps never get a second thought until the heat stops working on the…

Sue ShiwdinSeptember 24, 2026

Construction workers in safety gear hold colorful hard hats

Plumbing

New ANSI Hard Hat Standard Changes What Head Protection Means On the Job

A hard hat that shifts out of place on impact protects little more than the…

Sue ShiwdinSeptember 23, 2026

Heating & Cooling

How to Choose a DIY Mini Split: MRCOOL and Self-Install Options Explained

Most mini-split installs end the same way: a technician with an EPA Section 608 certification,…

Sue ShiwdinSeptember 22, 2026

plumber uses a key to drain air, draining water and air from a radiator

Plumbing

How to Bleed Air from a Hydronic Heating System

Every fall, hydronic heating systems across the country fire up for the first time in…

Sue ShiwdinSeptember 17, 2026

Cleaning the sewer with a snake to unclog the shower

Plumbing

How to Clean a Shower Drain

Standing in an inch of cloudy water while the drain gurgles and stalls isn't just…

Sue ShiwdinSeptember 15, 2026

Electrical

Building an Electrical Maintenance Program Contractors Can Actually Sell

A well-planned electrical maintenance program can help facility owners improve equipment reliability, manage downtime, and…

Sue ShiwdinSeptember 11, 2026

Wall-mounted electrical boxes power control and outdoor HVAC condenser unit

Heating & Cooling

The Outdoor HVAC GFCI Exemption Just Expired. Now What?

The exemption that let outdoor residential HVAC equipment skip GFCI protection expired Sept. 1, bringing updated requirements for contractors to…

Sue ShiwdinSeptember 11, 2026

Sue Shiwdin

Gas vs. Electric, Indoor vs. Outdoor, Brand vs. Brand: How to Choose a Tankless Water Heater

Data Centers Are Reshaping Electrical Contracting for Everyone, Not Just Data Center Crews

The A2L Refrigerant Transition Is Raising the Bar on Installation Practices

How to Diagnose and Replace a Hydronic Circulator Pump

New ANSI Hard Hat Standard Changes What Head Protection Means On the Job

How to Choose a DIY Mini Split: MRCOOL and Self-Install Options Explained

How to Bleed Air from a Hydronic Heating System

How to Clean a Shower Drain

Building an Electrical Maintenance Program Contractors Can Actually Sell

The Outdoor HVAC GFCI Exemption Just Expired. Now What?

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