Find Your Airflow Problem Before Replacing Your HVAC

I · The math

Avoid blind calls before parts are discussed

These are the ordinary decisions the manual helps you make in a better order. It does not promise a repair outcome. It gives you a way to inspect the safe, visible parts of the situation first.

You are paying to guess at a house problem

One room stays warm. The outdoor unit runs. The bill climbs. A contractor gives you a recommendation, but you do not know which observations matter or which questions to ask before agreeing to a repair.

You can describe the system before discussing parts

You know the equipment you have, the airflow checks to make, the warning signs to photograph, and the questions that separate a needed repair from a vague recommendation. You still call a professional for dangerous work. You make that call with useful information in hand.

	Now	With the book
Learning your equipment	A furnace, air handler, and outdoor unit are all just “the HVAC.”	You identify the major equipment and its job in one afternoon.
A no-cool complaint	You start with a service call and no record of what the system did.	You run the homeowner-safe no-cool checklist and note the useful symptoms first.
Filter decisions	You buy the most restrictive filter on the shelf and assume it is better.	You understand why filter choice can affect airflow and what to verify before changing it.
A wet floor near equipment	A small drain issue sits unnoticed until it becomes a larger cleanup.	You know the visible condensate checks and when a drain problem needs attention.
A repair-or-replace quote	You hear a recommendation without a framework for the fifteen-year decision.	You have the age, condition, questions, and second-opinion points written down.

The gain is fewer decisions made in the dark, starting with the first symptom you can safely check.

II · Inside the book

Twelve chapters for the calls homeowners face

The 139 pages follow the order problems tend to arrive: identify the system, check airflow and drainage, read visible signs, question a quote, and know the limits of homeowner work. Each chapter stays with equipment found in ordinary forced-air homes.

1. Know Your System in One Afternoonpp. 3–10

2. Filters and the Airflow Liepp. 11–19

3. The No-Cool Checklist: Run This Before You Pay a Diagnostic Feepp. 20–27

4. Condensate: The Cheapest Disaster You'll Ever Preventpp. 28–36

5. Reading the Outdoor Unit Without Opening Itpp. 37–43

6. Contractor Defense: Quotes, Upsells, and Second Opinionspp. 44–52

7. Repair or Replace: The Fifteen-Year Decisionpp. 53–60

8. Heat Pumps and Winterpp. 61–69

9. Ducts, Vents, and the Rooms That Never Feel Rightpp. 70–76

10. The Bill Cutters: Settings and Small Upgrades That Show Up on the Statementpp. 77–84

11. Miracle Gadgets and Too-Good-To-Be-True: The Verdict Tablepp. 85–92

12. Know It, Don't Touch It: Gas, Volts, and Refrigerantpp. 93–139

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III · Who wrote it

Twenty-three years of seeing the same failures

Glen Moffitt spent twenty-three years running two to four heating and cooling service calls a day across three counties. He saw the same expensive mistakes in house after house: restricted filters, stopped condensate drains, closed vents, bad thermostat settings, and equipment replaced before anyone had found the actual problem. He retired in 2019 and began recording what homeowners needed to know before a heat-wave or cold-snap call. He explains equipment the way he did at kitchen tables: what normal looks like, what you can safely check, and when it is time to leave the work to a technician.

IV · The offer

$27 once. No subscription. Yours forever.

12 chapters across 139 pages, plus 2 print-ready homeowner tools.

Find Your Airflow Problem Before Replacing Your HVAC

You are buying a written reference for the moments when a room will not cool, a drain is wet, a bill changes, or a recommendation needs a second look. It puts the checks, sequence, and safety limits in one place for less than a single uncertain decision can cost in time and confusion.

$27 $67 Launch price — ends August 30

Useful the first time you run the no-cool checklist before arranging a diagnostic visit.

What you get for $27:

Find Your Airflow Problem Before Replacing Your HVAC

Conditioned Air Secrets · A Homeowner’s Field Guide · No. I · MMXXVI

$27

BonusSeasonal Maintenance Checklist (Print PDF)

A two-page checklist for spring and fall system prep, the exact steps Glen ran on every tune-up call, formatted to print and hang near your furnace.

$7

BonusThermostat Programming Guide by System Type

Twelve pages covering optimal schedules for forced air, heat pump, and zoned systems, with explanations of recovery time, setback limits, and why some advice does not apply to your equipment.

$12

BonusLifetime updates

Every future revision of this book, free. When a checklist tightens or a price moves, the new edition reaches you at no charge.

$21

Everything together: $67 of material — today $27

You pay today ~~$67~~$27

Get the manual · $27

Instant download · PDF · 139 pages

Published by Handover Books · secure checkout · your statement will show Handover Books

Read the manual and use the included tools for 30 days. If it does not give you a clearer way to understand your system and prepare for a service conversation, request a refund within 30 days of purchase.

V · Questions

The questions worth answering before you buy

Why is the manual $27?

It is priced as a homeowner reference you can return to before seasonal maintenance, a no-cool call, a quote, or a thermostat change. It includes the 139-page manual and the two listed PDF tools.

Will this apply to my system?

It is written around common residential forced-air equipment, including furnaces, air handlers, central air conditioners, heat pumps, ducts, vents, filters, thermostats, and condensate drains. It also explains where system differences matter, particularly with heat pumps and zoned systems.

Is this a printed book?

No. It is an instant-download PDF. You can read it on a phone, tablet, or computer, and print the maintenance checklist if you want it near the equipment.

Does this tell me how to repair everything myself?

No. The manual marks the boundary clearly. It covers safe observation and homeowner checks, then tells you when gas, electrical, refrigerant, combustion, or other work belongs with a qualified technician.

What if I read it and it is not useful?

You have 30 days from purchase to request a refund. Read it, compare it to your equipment and questions, and decide whether it gives you a clearer next step.

Get the manual · $27

Know what you are looking at before the next call

A heating and cooling system does not need to be a mystery before you speak with a technician. Start with the visible equipment, the airflow path, the settings, and the symptoms. Leave dangerous work alone. Bring better information to the decision.

Get the manual · $27