Sizing guides
All appliance sizing guides
62 guides organised by appliance type. Every guide includes the math, a TL;DR, top product picks, and an FAQ.
Air purifier guides
10 guides
- What Size Air Purifier for a Bedroom? CADR Guide
- What Size Air Purifier for a Large Room (500+ Sq Ft)?
- What Size Air Purifier for a Living Room?
- What Size Air Purifier Do Pet Owners Need?
- What Size Air Purifier Do You Need for Allergies?
- How Many Air Changes per Hour Do I Need? (ACH Chart)
- What Is CADR? Air Purifier Sizing Explained
- What Size Air Purifier for Smoke and Wildfire? CADR Guide
- What Size Air Purifier for an Office or Home Office?
- What Size Air Purifier for a Basement?
Ceiling fan guides
14 guides
- What Size Ceiling Fan for a Bedroom?
- What Size Ceiling Fan for a Living Room?
- What Size Ceiling Fan for a Kitchen?
- What Size Ceiling Fan for a Garage?
- What Size Outdoor Ceiling Fan Do I Need?
- What Size Ceiling Fan for a 12×12 Room?
- What Size Ceiling Fan for a 10×10 Room?
- What Size Ceiling Fan for a Small Bedroom?
- What Size Ceiling Fan for a Master Bedroom?
- Ceiling Fan for High Ceilings: Blade Span + Downrod Guide
- Low Profile (Hugger) Ceiling Fan: Size Guide
- Ceiling Fan Direction: Summer vs Winter Guide
- How to Measure a Ceiling Fan (Blade Span Explained)
- Ceiling Fan Installation Cost Guide
Dehumidifier guides
10 guides
- What Size Dehumidifier for a 500 Sq Ft Room?
- What Size Dehumidifier for a 1,000 Sq Ft Space?
- What Size Dehumidifier for a 1,500 Sq Ft Space?
- What Size Dehumidifier for a 2,000 Sq Ft Space?
- What Size Dehumidifier for a Basement?
- What Size Dehumidifier for a Bedroom?
- What Size Dehumidifier for a Crawl Space?
- 50-Pint vs 70-Pint Dehumidifier: Which Size Do You Need?
- What Size Dehumidifier for a Grow Room? Tent Sizing Guide
- What Temperature Does a Dehumidifier Stop Working? Winter Guide
Generator guides
10 guides
- What Size Generator for a 2,000 Sq Ft House?
- What Size Generator to Run a Sump Pump?
- What Size Generator to Run a Window AC Unit?
- What Size Generator for an RV? A Complete Guide
- What Size Generator to Run a Refrigerator?
- Portable vs Standby Generator: Which Size Do You Need?
- What Size Propane Tank for a House Generator?
- What Size Generator for a 200 Amp Service?
- Generator Propane Consumption Calculator + Runtime Chart
- What Size Generator for EV Charging? Level 1 + Level 2 Guide
Mini split guides
10 guides
- What Size Mini Split for a Garage? Complete BTU Guide
- What Size Mini Split for 1,000 Sq Ft? BTU Calculator
- What Size Mini Split for a Basement? BTU Guide
- 9,000 BTU vs 12,000 BTU Mini Split: Which Size Do You Need?
- Mini Split Sizing for Florida: Complete BTU Guide
- What Size Mini Split Do I Need for a Bedroom?
- How Many BTU per Square Foot? (Mini Split Sizing Chart)
- Mini Split Sizing for Hot Climates (AZ, TX, FL, NV)
- How Many Mini Splits Per Outdoor Unit? Multi-Zone Sizing Guide
- What Size Mini Split for a Living Room? BTU Guide
Sump pump guides
10 guides
- What Size Sump Pump for a Basement? Complete Guide
- 1/3 HP vs 1/2 HP Sump Pump: Which Size Do You Need?
- Sump Pump Sizing for Heavy Rain Areas
- Sump Pump Battery Backup: What Size Do You Need?
- Sump Pump Installation Guide: Pipe Size, Check Valves & More
- Sump Pump GPH Chart: Capacity by Horsepower & Lift
- Sump Pump Battery Backup Sizing + Runtime Chart
- What Size Sump Pump for a Crawl Space?
- 1/2 HP vs 3/4 HP Sump Pump: Which Do You Need?
- What Size Sump Pump for a High Water Table?
Tankless water heater guides
11 guides
- What Size Tankless Water Heater for a Family of 4?
- What Size Tankless Water Heater for a Family of 2—?
- What Size Tankless Water Heater for a Family of 5—?
- Electric Tankless Water Heater Sizing Guide
- Gas Tankless Water Heater Sizing Guide
- Electric vs Gas Tankless Water Heater: Which Size & Type?
- Heat Pump vs Tankless Water Heater: Size & Efficiency
- Tankless Water Heater Sizing for Cold Climates
- Propane Tankless Water Heater Sizing Guide
- RV Tankless Water Heater Sizing Guide
- Tankless Water Heater Installation Cost Guide
Water heater guides
10 guides
- What Size Water Heater for a 1-2 Person Household?
- What Size Water Heater for a 3-4 Person Household?
- What Size Water Heater for a Family of 5?
- Tank vs Tankless Water Heater: Which Size Is Right?
- What Size Water Heater for Electric vs Gas Homes?
- Water Heater FHR Chart: First Hour Rating by Household Size
- Tankless Water Heater GPM Chart by Household Size
- Water Heater UEF Rating Explained: Energy Factor vs FHR Chart
- What Size Water Heater for a 2-Bathroom House?
- 40 vs 50 Gallon Water Heater: Which Size Do You Need?