MERV Ratings Explained for Homeowners
A plain-English hvac guide to merv ratings explained for homeowners — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 4, 2026
30 homeowner guides
The HVAC Almanac guide library.
Browse by the question you are trying to answer, then move into the guide that matches your situation.
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Pillar guides for the biggest decisions.
How Often Should You Change an HVAC Filter?
A plain-English hvac guide to how often should you change an hvac filter? — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 3, 2026
AC Running Constantly: Normal Heat Wave or Problem?
A plain-English hvac guide to ac running constantly: normal heat wave or problem? — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 2, 2026
Why One Room Is Hotter or Colder Than the Rest
A plain-English hvac guide to why one room is hotter or colder than the rest — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 1, 2026
5 guides
Comfort
Comfort guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
Why Upstairs Rooms Overheat in Summer
A plain-English hvac guide to why upstairs rooms overheat in summer — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 24, 2026
Short Cycling: What It Means
A plain-English hvac guide to short cycling: what it means — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 16, 2026
Thermostat Placement Mistakes
A plain-English hvac guide to thermostat placement mistakes — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 11, 2026
AC Running Constantly: Normal Heat Wave or Problem?
A plain-English hvac guide to ac running constantly: normal heat wave or problem? — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 2, 2026
Why One Room Is Hotter or Colder Than the Rest
A plain-English hvac guide to why one room is hotter or colder than the rest — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 1, 2026
4 guides
Airflow
Airflow guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
What Static Pressure Means in Plain English
A plain-English hvac guide to what static pressure means in plain english — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 22, 2026
Supply Vents vs Return Vents
A plain-English hvac guide to supply vents vs return vents — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 21, 2026
Duct Leaks: Signs, Testing, and Repair Options
A plain-English hvac guide to duct leaks: signs, testing, and repair options — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 9, 2026
When Duct Cleaning Is and Is Not Worth It
A plain-English hvac guide to when duct cleaning is and is not worth it — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 2, 2026
5 guides
Heat Pumps
Heat Pumps guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
Dual Fuel HVAC Systems Explained
A plain-English hvac guide to dual fuel hvac systems explained — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 25, 2026
Heat Pump Rebates and What to Ask Before Buying
A plain-English hvac guide to heat pump rebates and what to ask before buying — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 17, 2026
Mini-Splits vs Central HVAC
A plain-English hvac guide to mini-splits vs central hvac — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 13, 2026
Furnace vs Heat Pump: How to Choose
A plain-English hvac guide to furnace vs heat pump: how to choose — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 6, 2026
Heat Pumps in Cold Weather, Explained Plainly
A plain-English hvac guide to heat pumps in cold weather, explained plainly — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 5, 2026
5 guides
Indoor Air
Indoor Air guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
Dehumidifier vs Better HVAC Setup
A plain-English hvac guide to dehumidifier vs better hvac setup — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 23, 2026
Indoor Air Quality Upgrades That Matter
A plain-English hvac guide to indoor air quality upgrades that matter — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 12, 2026
Why Your House Feels Humid With the AC On
A plain-English hvac guide to why your house feels humid with the ac on — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 10, 2026
MERV Ratings Explained for Homeowners
A plain-English hvac guide to merv ratings explained for homeowners — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 4, 2026
Fresh Air Ventilation Basics
A plain-English hvac guide to fresh air ventilation basics — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 3, 2026
6 guides
Maintenance
Maintenance guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
Fall Furnace Checklist for Homeowners
A plain-English hvac guide to fall furnace checklist for homeowners — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 27, 2026
Spring AC Checklist for Homeowners
A plain-English hvac guide to spring ac checklist for homeowners — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 26, 2026
How Long Does an HVAC System Last?
A plain-English hvac guide to how long does an hvac system last? — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 18, 2026
Signs Your AC May Be Low on Refrigerant
A plain-English hvac guide to signs your ac may be low on refrigerant — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 15, 2026
What HVAC Maintenance Should Include
A plain-English hvac guide to what hvac maintenance should include — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 14, 2026
How Often Should You Change an HVAC Filter?
A plain-English hvac guide to how often should you change an hvac filter? — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 3, 2026
5 guides
Costs
Costs guides from HVAC Almanac for homeowners who need practical context before they call, compare, approve, or troubleshoot.
Emergency HVAC Repair Costs
A plain-English hvac guide to emergency hvac repair costs — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 20, 2026
Questions to Ask an HVAC Contractor
A plain-English hvac guide to questions to ask an hvac contractor — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 19, 2026
How to Read an HVAC Replacement Quote
A plain-English hvac guide to how to read an hvac replacement quote — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 8, 2026
What SEER2 Means Without the Sales Language
A plain-English hvac guide to what seer2 means without the sales language — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 7, 2026
HVAC Warranty Terms Homeowners Should Read
A plain-English hvac guide to hvac warranty terms homeowners should read — what to check first, what the terms mean, and when to bring in a qualified pro.
Chris Lee · May 1, 2026