AC Replacement Checklist: 15 Things Every Homeowner Should Know

AC Replacement Checklist: 15 Things Every Homeowner Should Know

Replacing an AC system is a significant home improvement project. Here's your checklist to ensure you're prepared, informed, and protected.

Pre-Replacement: Evaluation & Decision

1. Get Multiple Quotes

Don't hire the first contractor. Get 2-3 quotes from different HVAC companies.

What to compare:

• Equipment specifications (brand, model, SEER rating, tonnage)
• Labor cost and installation details
• Warranty (duration and what's covered)
• Total installed cost
• Financing options and APR

Red flags:

• Quotes vary wildly (one is $8,000, another is $15,000 for same system)
• Contractor won't provide written estimate
• Estimate doesn't itemize equipment, labor, permits

2. Verify Contractor Licensing

Every HVAC contractor in Texas must have a state license.

How to verify:

• Ask for Texas TDLR license number
• Verify at tdlr.texas.gov
• Confirm license is current and in good standing
• Check BBB rating (aim for A/B or higher)

Never hire unlicensed contractors. Your warranty is void, you're liable if something goes wrong, and quality is questionable.

3. Understand Tonnage Requirements

The right size matters more than you think.

Typical sizing:

• 2-ton: Homes under 1,200 sq ft
• 3-ton: 1,200-1,600 sq ft homes
• 4-ton: 1,600-2,200 sq ft (especially two-story)
• 5-ton: 2,200+ sq ft or high-load homes

Questions to ask:

• "Why are you recommending this tonnage?"
• "Is there a calculation or load estimate?"
• "What happens if I upsize/downsize?"

Don't accept "we always put 4-ton in houses like this." Every home is different.

4. Check System Age and History

If your current system is still running:

Know:

• Installation year (check serial number)
• Repair history (major repairs, how often?)
• Current refrigerant type (R-22 is being phased out)
• Whether it's keeping home adequately cool

Logic:

• System over 15 years old: Replace
• System 10-15 years old needing major repair: Replace
• System under 10 years old: Repair if fixable

5. Assess Ductwork Condition

Leaky ducts undermine new system efficiency.

During contractor visit, ask:

• "Are my ducts in good condition?"
• "Do you recommend sealing or repair?"
• "How much for ductwork work?"

Consider if:

• You're upgrading from 3-ton to 4-ton (needs larger ducts)
• Known cooling problems (uneven temperature)
• Ducts are 20+ years old or visibly deteriorated

6. Understand Equipment Options

Three efficiency tiers: Economy (15 SEER), Midrange (17 SEER), Premium (20 SEER).

Choose based on:

• How long you're staying (long-term favors premium)
• Your electric bills (high bills favor premium)
• Home size and cooling load
• Your budget

In Texas: Midrange (17 SEER) is sweet spot for most homeowners. Balances cost and efficiency.

Financial Planning

7. Confirm Total Installed Cost

Ensure the quote includes everything:

• Equipment (condenser, furnace/air handler, coil, thermostat)
• Labor and installation
• Permits and inspection fees
• Old system removal and haul-away
• Ductwork connections and testing
• System startup and commissioning

If quote doesn't list these, ask.

8. Understand Financing Options

Most contractors offer financing. Know your terms:

Standard financing:

• 8.99% APR (typical for HVAC)
• 12-year terms (144 months)
• Monthly payments $100-$200 depending on system choice

Alternative terms:

• 7-year loan: Higher payment, less total interest
• 15-year loan: Lower payment, more total interest
• Cash down payment: Reduces financed amount

Credit requirement: Most contractors accept good/fair credit. Ask about requirements.

9. Confirm Warranty Coverage

10-year warranty is standard. Understand what's covered:

Parts warranty covers:

• Compressor failure
• Evaporator coil failure
• Furnace/air handler failure
• Condenser coil failure

Labor warranty covers:

• Installation defects
• Repair labor for covered components

Not covered:

• Refrigerant top-ups (usually)
• Maintenance items (filters, coil cleaning)
• Damage from lack of maintenance

Get it in writing. Don't rely on verbal promises.

Pre-Installation: Preparation

10. Prepare Your Home

Before the contractor arrives:

Clear access:

• Driveway clear for contractor vehicles
• Path to furnace/air handler clear
• Outdoor unit location accessible
• Attic access clear (if needed for ductwork)

Communicate:

• Discuss when installation will occur
• Ask how many days the process takes
• Confirm parking needs
• Understand noise levels during work

Plan your schedule:

• Be home during installation (contractor questions will arise)
• Plan activity for family/pets (AC might be off during part of installation)
• Account for noise from installation equipment

11. Document Existing System

Before removal, take photos of old system:

• Serial number plate
• Ductwork connections
• Electrical connections
• Thermostat wiring (for reference)

Why: If questions arise about old system, documentation helps.

12. Plan for Temporary Cooling

If installation takes 1-2 days without AC:

Mitigation:

• Close curtains to block solar heat
• Use portable AC or window unit if available
• Plan to be away during hottest part of day
• Open windows at night for natural cooling

Comfort: It's uncomfortable but manageable for 24-48 hours.

During Installation

13. Observe Key Steps

You're not watching every minute, but observe important milestones:

Confirm:

• Old system is properly removed and disposed
• New equipment is correct model/tonnage
• Refrigerant lines are evacuated and pressure-tested
• Thermostat is properly installed and tested
• System is started and tested before contractor leaves

Ask questions:

• "Can you walk me through startup and settings?"
• "What should I listen for when system runs?"
• "How do I change the filter?"

14. Verify System Testing

Before you pay, confirm:

Proper startup:

• Outdoor unit hums and compressor engages
• Cool air comes from indoor unit/vents
• Thermostat responds correctly
• Temperature drop is noticeable (15-20 minutes)

Pressure testing:

• Refrigerant lines were evacuated (no moisture)
• Refrigerant was charged to spec (proper amount)
• No leaks detected

Documentation:

• Get receipt for work completed
• Get warranty paperwork
• Get thermostat manual and login info
• Get maintenance schedule recommendations

Post-Installation: Ongoing Care

15. Establish Maintenance Plan

Your system will run 15-20 years with proper maintenance. Schedule:

Annual pre-season inspection ($100-$150):

• April/May before heavy cooling season
• Includes coil cleaning, filter check, system test

Filter changes (every 1-3 months):

• $10-$20 per filter
• Critical for system performance and longevity

Ductwork inspection (every 3-5 years):

• Check for deterioration or leaks
• Seal any leaks found

Thermostat optimization:

• Learn smart features (scheduling, geofencing)
• Set consistent setpoints
• Monitor electric bills for efficiency

The Bottom Line Checklist

Before signing, you should have:

• [ ] 2-3 written quotes compared
• [ ] Contractor licensing verified
• [ ] Tonnage recommendation explained
• [ ] Equipment specifications understood
• [ ] Total installed cost confirmed (all items listed)
• [ ] Financing terms reviewed
• [ ] Warranty documented in writing
• [ ] Ductwork assessed and plan decided
• [ ] Home prepared for installation
• [ ] Installation date and timeline confirmed
• [ ] System testing plan discussed
• [ ] Maintenance plan understood
• [ ] All paperwork organized (warranty, manual, receipt)

If you can check all these boxes, you're ready for installation.

Use DFW Air Cost

Get started with dfwaircost.com to receive a quote that addresses all these checklist items. A proper quote will answer most of these questions before you even schedule installation.

Ready to start your AC replacement with confidence? Head to dfwaircost.com now.

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