HVAC Pricing Tool • Updated 2026
AC Installation Cost Calculator
Estimate your installed Lennox system price based on home size, tonnage, SEER2 rating, ductwork, and more. Serving Little Elm, Frisco, McKinney & the DFW area.
Financing Available
per month
$0 Down • 0% APR
Up to 60 months with approved credit. No interest, no hidden fees — just a comfortable home on a budget that works for you.
Oak Point vs Budget Contractors
| What’s Included |
Budget |
Oak Point |
| Name-brand Lennox system | ✗ | ✓ |
| EPA / certified technicians | Sometimes | ✓ |
| Permit pulled & filed | ✗ | ✓ |
| Smart thermostat included | ✗ | ✓ |
| Drain safety / float switch | ✗ | ✓ |
| 5-Year labor warranty | ✗ | ✓ |
| $0 down, 0% APR financing | ✗ | ✓ |
Check Our Prices
Lennox 14.3 SEER2 R454B • Any Size • Gas System
From $10,298 Installed
Professional installation included • Financing available
Call Now: (940) 208-4300 →
Full Pricing — Lennox 14.3 SEER2 R454B
2 Ton$10,298.63
2.5 Ton$10,411.97
3 Ton$10,568.61
3.5 Ton$11,163.35
4 Ton$12,003.88
5 Ton$12,142.70
or from $171.65/mo with financing
*Estimates are based on typical DFW installation parameters and Oak Point’s standard pricing. Actual cost may vary based on site conditions, existing equipment, and local code requirements. Call for an exact quote.
