The blog & Resources

Guides and resources about heating, cooling, maintenance, and pricing for customers and local businesses.

For customers

Customer guides for confident HVAC service visits

Compare HVAC quotes, choose a contractor, and prepare for installation or maintenance.

Editorial illustration of comparing contractor information
Featured guide

HVAC credentials and dealer badges: what to check before hiring

Understand the difference between a technician's certification, a business licence and a manufacturer dealer programme, with links to the original issuers.


Illustration of planning the equipment and scope for a heating project
Project preparation

Do you need an HVAC assessment before requesting quotes?

Decide who should assess comfort problems, replacement equipment and wider home changes, then request the documents that make proposals comparable.

Editorial illustration of planning HVAC servicing
Free calculator

HVAC maintenance plan or individual visits: yearly cost calculator

Compare your annual service plan with paying for each visit, including visits outside the plan and extra charges.

HVAC costs and quote comparison illustration
Free calculator

HVAC energy cost calculator: estimate your AC or heat pump running costs

Estimate electricity use and running costs from your system's input power, operating hours, and electricity rate. See the calculation and its assumptions.

Illustration of an HVAC maintenance checklist
Home maintenance

How to change an HVAC air filter: size, airflow direction, and timing

Find the correct replacement filter, check airflow direction, and build a simple inspection routine for your furnace, air conditioner, or heat pump.

Illustration of planning an HVAC service visit and home comfort needs
Heating and cooling tips

How to set a thermostat schedule that fits your home

Build a practical heating and cooling schedule around occupancy, comfort, and your equipment, including the important differences for heat pumps.

Illustration of checking HVAC contractor and service details
Troubleshooting guide

Air conditioner not cooling? What to check before calling a contractor

Check settings, accessible filters, and blocked airflow, then prepare a useful repair request without opening electrical or refrigerant components.

Illustration of planning a heating and cooling system installation
Buying guide

Should you repair or replace your HVAC system? A practical comparison

Compare a diagnosed repair with a complete replacement proposal using condition, warranty, comfort, installation scope, and operating-cost assumptions.

Editorial illustration of contractor vetting dossier with verified state mechanical licensing and insurance badges
Choosing a contractor

How to choose an HVAC contractor: the complete vetting guide

A comprehensive framework for evaluating licenses, insurance, Manual J load calculations, warranties, and contractor estimates.

Editorial illustration of comparing heating and cooling proposals
Planning your project

How to compare HVAC quotes: equipment, scope and warranties

Compare the equipment, installation work, exclusions and warranties in your proposals, then use a free worksheet to ask about the missing details.

Editorial illustration of preparing information for an HVAC appointment
Service visits

How to prepare for an HVAC visit: photos, access and questions

Prepare a clear symptom summary, equipment information and access details so your contractor can plan the visit and explain the next step.

Editorial illustration of cold-climate inverter heat pump on snow riser stand with low-ambient COP benchmarks and tax credits
Heating and cooling

Heat pump installation guide: questions, sizing, and cold-climate readiness

Essential evaluation guide covering cold-climate inverter heat pumps, Manual J load sizing, COP efficiency, electrical panels, and IRA tax credits.

Editorial illustration of 21-point seasonal maintenance tune-up with digital manifold gauges, capacitor testing, and combustion audit
Maintenance

What to expect during an HVAC seasonal maintenance visit

A comprehensive 21-point checklist covering electrical components, static pressure, coils, burners, and service agreements.

Editorial illustration of commercial rooftop unit RTU replacement with crane rigging, curb adapter, and economizer dampers
Commercial properties

How to build a commercial HVAC project brief: facility manager guide

Essential commercial brief framework for rooftop units (RTUs), economizers, crane lift permits, zoning, and tenant coordination.


For HVAC professionals

Technical guides for HVAC contractors

Build repeatable quoting, territory planning, profile positioning, and diagnostic systems for an HVAC business.

Next step

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