Kyzar Air Conditioning
ClaimTypical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more
What to Compare
Compare the exact model on each proposal. Rheem publishes 92% AFUE for the cited R921T; Lennox lists up to 96% for the ML196E. Both use single-stage heating and a constant-torque motor. Those specifications identify a difference in rated heating efficiency, but do not establish the better complete system for your home or a particular bill saving. Ask the installer to explain the proposed capacity, equipment pairing and scope before comparing total prices.
Head-to-Head Breakdown
Rheem Furnace
Features and considerations
- Rheem identifies the cited R921T model and its published heating specifications on one product page.
- The page links product documentation and a warranty card for checking the actual proposal.
- Its warranty summary identifies conditional parts coverage and heat-exchanger coverage separately.
Limits and questions
- Registration is required for the advertised conditional parts term; confirm who completes it and retain the confirmation.
- Ask separately about installation labor, diagnostic visits and other charges rather than assuming the parts warranty covers them.
- This comparison establishes no Florida-wide price, repair-frequency or installer-quality advantage.
Lennox Furnace
Features and considerations
- Lennox publishes model-specific heating, blower and warranty information for the ML196E.
- The manufacturer identifies the model as dual-fuel capable; ask for the proposed compatible pairing.
- The page distinguishes basic warranty coverage from a registration-based extended option.
Limits and questions
- Ask which extended warranty option applies to the quoted equipment and what registration is required.
- Up to 96% is a published rating, not a forecast of this household’s annual operating cost.
- Confirm the installation scope and local service arrangements in writing.
Side-by-Side Comparison
| Rheem Furnace | Lennox Furnace | |
|---|---|---|
| Model covered here | R921T0703A17M4SNAS on the cited Rheem page | ML196E on the cited Lennox page |
| Published AFUE | 92% | Up to 96% |
| Heat and blower | Single-stage; constant torque | Single-stage; constant torque |
| Parts summary | 10-year conditional coverage; registration required | 5-year coverage; 10-year extended limited option with registration |
| Heat-exchanger summary | Limited lifetime | 20-year limited |
| Whole-system decision | Request the exact equipment combination and installation scope | Request the exact equipment combination and installation scope |
Frequently Asked Questions
Does the higher AFUE make Lennox the automatic choice?
No overall winner is established by these two specification pages. Ask each contractor to show how the proposed furnace, cooling equipment, controls and installation work fit the house. Compare the explanation and the complete written scope alongside the quoted price.
Should I compare a heat-pump option too?
Ask the contractor to describe the available alternatives for your existing equipment and fuel supply. Lennox calls the ML196E dual-fuel capable, but that does not confirm compatibility with equipment already in your home. Request exact model numbers and the proposed control arrangement.
How do I compare warranty proposals?
Obtain the certificate for the exact model and a separate written installation-labor warranty. Record registration steps, exclusions, whom to contact, and what charges may remain. A headline duration alone does not answer those service questions.
What should I request before approving work?
Ask for the equipment model numbers, the basis for the selected capacity, any duct or electrical changes, removal and disposal, permit responsibility, startup checks and the total price. Keep excluded work and optional upgrades separate so two proposals can be compared without guessing.
Sources and scope
Source review: 2026-09-08. This comparison is limited to the two named furnace models; it is not a ranking of every Rheem or Lennox product.
Official sources reviewed September 8, 2026. Product and company statements are attributed; we did not test these products, collect matched local quotes or verify individual installers. This comparison is limited to the two named furnace models; it is not a ranking of every Rheem or Lennox product.
Browse Florida HVAC Listings
These public listings share the broad hvac category. Inclusion does not confirm that a business supplies the products or specialist services discussed above. Ask about the exact work, credentials and current availability before requesting a quote.
Complete Care Air
ClaimTypical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more
Kyzar Air Conditioning
ClaimTypical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more
AC Heroes
ClaimTypical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more
Typical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more
Typical hvac services: AC repair & installation, Duct cleaning, Heating repair, +4 more