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Blog Category: Hvac

Explore all articles and guides related to "Hvac". Find expert tips, cost analysis, and project checklists to help you succeed.

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A person holding a piggy bank and looking at an electricity bill, illustrating energy costs.
HVAC

The True Cost of a Low SEER AC Unit in 2026

The initial savings on a low SEER air conditioner are often dwarfed by high lifetime energy costs in 2026. Learn the difference between SEER and SEER2.

February 9, 202611 min read
A cross-section of an attic showing deep, uniform insulation material.
HVAC

Insulation R-Values: What They Mean in 2026

Understand 2026 insulation R-values, how they slow heat transfer, and the minimum R-values required by the IECC based on your Climate Zone.

January 26, 20269 min read
A map of the United States divided into different colored regions representing the DOE Climate Zones.
HVAC

Climate Zones 101: Why Your Location Dictates Your HVAC Size (2026 DOE Zones)

Understanding the 2026 DOE Climate Zone Map is vital for home efficiency. Learn how your zone determines insulation R-values.

January 12, 20268 min read
A piggy bank with a large crack in it, symbolizing the hidden financial costs of an oversized AC unit.
HVAC

The Hidden Costs of Oversized Air Conditioners (And How to Avoid Them) 2026

Is your house cold and clammy? You may have an oversized AC. Learn the hidden costs of oversizing in 2026, from $800/year in wasted energy.

January 5, 202610 min read
An architect reviewing blueprints with HVAC diagrams, representing a Manual J calculation.
HVAC

Manual J Explained: What Your HVAC Contractor Should Tell You in 2026

A deep dive into the industry-standard method for HVAC sizing that most homeowners have never heard of. Updated for 2026.

December 22, 20259 min read
An oversized air conditioner next to a small house, illustrating a sizing mistake.
HVAC

5 HVAC Sizing Mistakes That Cost Homeowners Thousands in 2026

Learn to identify and avoid the most common and costly mistakes contractors make when sizing new air conditioners and furnaces in 2026.

December 15, 20258 min read
A close-up of a modern, clean air conditioner unit, symbolizing HVAC technology.
HVAC

The Manual J Load Calculation: Why It's the HVAC Gold Standard for AC Sizing in 2026

ACCA Manual J is the mandatory gold standard for determining your home's HVAC load. Learn why sizing by square footage is dangerous and the critical inputs required in 2026.

December 8, 202512 min read
A yellow EnergyGuide label on an appliance, showing efficiency ratings like EER and SEER.
HVAC

EER vs. SEER: Clarifying the Two Key Efficiency Metrics in 2026

Learn the difference between EER and SEER ratings for air conditioners. Understand why SEER is a seasonal average and EER measures peak performance.

November 24, 20258 min read
A thermostat showing a split screen, with a flame on one side and a snowflake on the other, symbolizing heating and cooling choices.
HVAC

Heat Pump vs. Gas Furnace: Which is Right for Your Climate Zone in 2026?

An analysis of heat pumps and gas furnaces. Learn the pros, cons, and operating costs of each to determine the best heating system for your home's climate.

November 10, 202512 min read
A schematic showing the complex design and airflow of an HVAC ductwork system.
HVAC

Ductwork Design (Manual D): The Unseen Key to HVAC Performance

Your HVAC system is only as good as its ductwork. Learn what ACCA Manual D is, why it's critical for airflow, and how improper ducts waste thousands in 2026.

November 3, 202511 min read
A modern high-efficiency gas furnace with its cover off, showing the internal components.
HVAC

What is AFUE? Understanding Furnace Efficiency Ratings

A complete guide to AFUE (Annual Fuel Utilization Efficiency). Learn what the percentage means, the difference between 80% and 95% furnaces, and how to choose the right one in 2026.

October 27, 20259 min read
A modern HVAC system installation showing both indoor and outdoor units, representing proper system sizing.
HVAC

HVAC Sizing Guide 2026: Stop Guessing, Start Calculating

The definitive guide to sizing your air conditioner and furnace in 2026. Learn why the '500 sq ft per ton' rule is obsolete and how Manual J calculations ensure perfect sizing.

October 20, 202510 min read