Lennox ML297V

Size, efficiency & equipment

Manufacturer family headline / up to; confirm selected model.

Family maxima and ranges are not the specification of every size. Obtain the complete model suffix, current output rating and dimensional drawing. Cabinet dimensions do not include all service clearances.

Manufacturer pictures & technical drawings

Exact cabinet drawing was not verified for this profile. Use the manufacturer sources below and request the selected model’s current dimensional sheet before ordering.

What makes ML297V worth comparing

ML297V is a useful reminder to compare models rather than assume Merit means a basic single-stage furnace. The current manufacturer page identifies two-stage heating and a variable-speed blower at 97 percent AFUE. Because family transitions can leave mixed product photographs and older names online, request a complete model number and matching specification sheet. An ML296V picture used illustratively is not a substitute for the ML297V equipment schedule or warranty document.

Capacity and physical fit

A complete model-specific input value is required; this family overview does not substitute a guessed capacity. Obtain the manufacturer-rated output for that same model; this guide does not calculate it by multiplying input by seasonal AFUE. Exact cabinet dimensions were not established in this overview; require the current full-model drawing before accepting fit.

Review the proposed installation

Before accepting ML297V, ask what the completion record will contain. The installer should identify the full supplied model, final controls, relevant commissioning measurements and any conditions still requiring follow-up. Keep the warranty registration together with the paid invoice and equipment photographs. Those records make a later service call more useful because the next technician can distinguish the intended setup from assumptions about how the system was installed.

The question that resolves the choice

The specific question to put to the installer is: Which complete ML297V model and current Canadian supply document support the quoted specifications? Ask for the answer in writing, linked to the quoted ML297V model and the work included. If the explanation changes after the visit, retain both versions and identify the newly observed condition. This gives a second reviewer useful evidence and avoids comparing an early allowance with a final assessed price as though they were the same promise.

Read the efficiency number in context

The published 97% figure for ML297V is a family comparison point. Ask for the selected model’s own rating and keep that record with the proposal. It does not include every household energy expense, determine the price of fuel or establish the condition of the ducts. An operating-cost estimate should disclose its fuel-price and usage assumptions so a reviewer can reproduce the calculation rather than accept an unexplained saving.

Cost, reliability & alternatives

No universal Canadian installed price is asserted. Obtain dated CAD equipment and installed-scope amounts, tax treatment and local assessment; compare like-for-like written proposals.

No defensible comparative Canadian failure-rate ranking established.

Read the Lennox brand assessment · Installed-price context · Compare this model

Sources & verification

Research snapshot: 11 October 2026. Confirm the current complete model, Canadian supply and warranty before purchase.

• Lennox ML297V manufacturer product information
• Lennox Canadian furnace line card