Understand your options before you spend thousands of dollars. Learn how sizing, equipment selection, ductwork, installation quality and contractor proposals fit together.
Read the buyer's guide Get local quotesIndependent educational resource. Contractor relationships are disclosed — this guide is published by Allred Heating, Cooling, & Electrical; see About.
Four questions should drive the conversation. A good HVAC replacement starts with the home and the design — not with a box on a truck. ACCA's residential design framework covers load calculation, equipment selection and duct design.
Estimate the home's heating and cooling loads.
Select equipment using loads, climate and manufacturer performance data.
Evaluate or design the duct system and airflow.
Make sure the installation, setup and commissioning match the design.
Learn the system before you choose the system. Different homes and priorities can lead to different solutions. The goal here is to understand the tradeoffs before you talk price.
Heating and cooling from one system, with performance that depends on equipment, sizing, installation and climate.
Learn & get quotes →Understand fuel type, efficiency, capacity, airflow and what should be included in replacement work.
Learn & get quotes →Compare capacity, efficiency, matched equipment and installation scope instead of shopping by tonnage alone.
Learn & get quotes →Explore when zoned or ductless equipment can make sense and what installation details matter.
Learn & get quotes →Don't compare HVAC proposals on price alone. Two proposals can look similar while including very different equipment, design work, warranties and installation scope.
Look for manufacturer and exact model numbers, capacity, efficiency and matched components.
Ask how the contractor determined capacity and whether existing ductwork and airflow were evaluated.
Review permits, electrical work, refrigerant work, condensate, startup/commissioning, cleanup and warranty terms.
Upload photos or PDFs of two or three HVAC proposals and turn them into a side-by-side checklist comparison of price, equipment, sizing, ductwork, installation scope, permits and warranties.
Compare my HVAC quotesBuild confidence before the sales appointment. Our education is designed around the questions homeowners actually need answered.
Understand the factors that move a project price: equipment, capacity, efficiency, ductwork, electrical, permits and installation complexity.
Look at upfront cost alongside equipment performance, installation requirements and expected operating considerations.
Think through equipment age, repair history, comfort, reliability and the condition of the overall system.
Learn why a contractor should consider the home's actual heating and cooling loads rather than relying only on rules of thumb.
Plain-English explanations of load calculation, equipment selection and duct design.
A homeowner-friendly checklist for comparing contractor proposals and identifying missing scope.
Helpful HVAC buying guides across King County — local planning questions, answered without confusing an educational guide for an installing contractor.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
Understand HVAC sizing, compare itemized bids, and verify Washington contractor registration.
County-wide guidance on heat pumps, sizing, ductwork and complete, comparable bids.
Answer a few questions about your home and your project. Your request goes to Allred Heating, and we respond with next steps and a site-specific, itemized proposal — not an advertised starting price.
Request local HVAC quotes Call 206-418-9153