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What size furnace should I buy?

Square FootageFurnace BTU
1,000-1,200 sq. ft. Home40,000 - 60,000 BTU
1,200-1,500 sq. ft. Home60,000 BTU
1,500-1,800 sq. ft. Home60,000 - 80,000 BTU
1,800-2,500 sq. ft. Home80,000 - 100,000 BTU
2,500-3,500 sq. ft. Home100,000 to 120,000 BTU

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Ruud Furnace Review & Buying Guide

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Ruud

4.6

Average Rating By Homeowner

$5,500

Average Price Including Installation

Ruud Furnaces At a Glance

Strengths

Efficient direct spark ignition ensures reliable startups and reduces wasted fuel.
Condensate drain sensor detects blockages early to prevent water damage or shutdowns.
Self-diagnostic control boards simplify troubleshooting, maintenance, and repairs.
Compact cabinet design allows installation in tighter or space-limited areas.
Smart monitoring system provides real-time alerts and performance updates.
Removable heat exchangers allow for easier access during service or repairs.
Secondary heat exchangers maximize efficiency through condensing operation.
Corrosion-resistant heat exchangers (both primary and secondary) extend product life.
Fully insulated cabinets with solid bottoms help reduce noise during operation.
Many ENERGY STAR® certified models, supporting energy savings and rebate eligibility.
Bluetooth-enabled units allow convenient setup and diagnostics via smart devices.
DIP switch configuration speeds up installation and fine-tuning.
Ultra-low NOx models available for regions with strict emissions regulations.
Excellent warranty coverage, especially on mid- and high-tier models.
Wide range of variable-speed furnaces for enhanced comfort and energy efficiency.

Room For Improvement

Higher price point compared to similar models from sister brand Rheem, despite sharing many components.
Extensive product lineup can make it challenging for homeowners to identify the right model for their needs.
Minimal differences between some models, which may cause confusion during the decision-making process.

Ruud Furnace Review

Looking for a reliable and energy-efficient furnace? This complete Ruud furnace buying guide gives you everything you need to know—updated for the latest models and features.

Ruud is a respected name in the HVAC industry, known for offering quality furnaces that balance performance, innovation, and affordability. Whether you're upgrading an outdated system or installing a new one, Ruud offers a range of options to suit various budgets and home sizes.

This guide will walk you through Ruud’s top furnace models, their AFUE efficiency ratings, key features, warranty coverage, and pricing. You'll also find a helpful model comparison table to simplify your decision-making and ensure you choose the furnace that’s right for your home and comfort needs.

Also Read: The Best Furnaces for Canadians

Bottom Line

Ruud offers a wide range of high-efficiency furnaces at competitive prices, making them a strong choice for homeowners seeking value and performance. With many ENERGY STAR® certified models available, Ruud is an appealing option for those looking to save on energy bills and take advantage of rebate programs.

Their lineup includes everything from affordable single-stage units ideal for milder climates to advanced two-stage and modulating systems designed for colder regions. Ruud also integrates smart design features and continues to incorporate new technologies that enhance comfort, efficiency, and ease of maintenance.

Overall, Ruud furnaces strike a solid balance between innovation, reliability, and cost, backed by strong warranty coverage to protect your investment.

Ruud Furnace Models Overview

Entry-Level Furnaces

Average price: $4,400 – $5,400

Ruud’s entry-level Achiever Series offers budget-friendly furnaces with solid efficiency and dependable performance. These models are best suited for smaller homes and milder climates.

Models:

  • R92T: 92% AFUE, single-stage, multi-speed. No longer qualifies as high efficiency in colder regions like Canada.
  • R921T: 92% AFUE, single-stage, multi-speed. Includes a self-diagnostic control board with LED error display for quicker servicing.
  • R921V: 92% AFUE, single-stage, variable-speed. Offers improved airflow control, quiet operation, and better humidity regulation.
  • R95T: 95% AFUE, single-stage, multi-speed. Includes a secondary heat exchanger for enhanced efficiency.
  • R951T: 95% AFUE, single-stage, multi-speed. Equipped with the PlusOne™ direct spark ignition system—more reliable than a pilot light.
  • R951V Ultra-Low NOx: 95% AFUE, single-stage, variable-speed. Eco-friendly option meeting strict emissions standards like California's.
  • R951V: 95% AFUE, single-stage, variable-speed. Bluetooth-enabled and equipped with DIP switches for quick, flexible installation.

Best For:
Smaller homes or homes in warmer regions. These models offer basic, reliable heating but may not be suitable for larger spaces or harsh winters.

Mid-Range Furnaces

Average price: $4,900 – $5,900

Ruud’s Achiever Plus mid-range models strike a balance between cost, efficiency, and features—making them ideal for moderate to large homes in colder climates.

Models:

  • R96T: 96% AFUE, two-stage, multi-speed. Features a removable heat exchanger for easier maintenance and service.
  • R962V: 96% AFUE, two-stage, variable-speed. EcoNet™ enabled for Wi-Fi control, scheduling, filter monitoring, and more (requires EcoNet thermostat).

Best For:
Homeowners looking for affordable two-stage heating with reliable performance and some smart features for better comfort and efficiency.

Top-Tier Furnaces

Average price: $5,400 – $6,400

Ruud’s Ultra Series represents the brand’s most advanced models. These furnaces are designed for maximum comfort, efficiency, and smart home integration.

Models:

  • U96V: 96% AFUE, two-stage, variable-speed. Compact 34” cabinet, suitable for tight spaces like closets, basements, or attics.
  • U97V: 97% AFUE, modulating, variable-speed. Equipped with EcoNet smart technology and real-time system monitoring.
  • U97MV: 97% AFUE, modulating, variable-speed. Includes the PlusOne™ Water Management System to prevent flooding from drain clogs.
  • U98MV: 98% AFUE, modulating, variable-speed. Offers ultra-precise temperature control with 40%–100% heat modulation.
  • U98V: 98% AFUE, modulating, variable-speed. Features enhanced quiet operation with a patented heat exchanger that reduces airflow noise by up to 20%.

Best For:
Larger homes or cold climates. These high-end models offer quiet performance, advanced features, and exceptional energy savings—great for homeowners who want top-tier comfort and efficiency.

Recently Discontinued Models

  • R96P – Achiever Plus Series
  • R95P – Achiever Series
  • R92P – Achiever Series

Ruud Exclusive Features

PlusOne™ Diagnostics

Ruud’s innovative PlusOne™ Diagnostics feature includes an industry-first 7-segment LED display that provides detailed system feedback and error codes.

This built-in tool simplifies troubleshooting, helping homeowners better understand issues and possibly resolve minor problems without needing a service call.

When professional service is required, the diagnostic system streamlines the repair process—saving both time and labour costs.

PlusOne™ Ignition System

The PlusOne™ Ignition System is Ruud’s proprietary direct-spark ignition technology, designed for increased reliability and long-term performance.

Unlike traditional pilot lights, this system delivers dependable starts every time, even during extreme cold, and enhances overall serviceability for technicians.

It’s an added layer of peace of mind—especially during harsh winters when reliable heating is critical.

PlusOne™ Water Management System

Ruud’s PlusOne™ Water Management System includes:

  • A patented blocked drain sensor
  • A self-priming drain trap
  • Pre-marked condensate hoses

Together, these components work to detect and prevent water issues from clogged condensate drains. The system helps protect your home from potential water damage while also reducing maintenance time and service costs.

EcoNet™ Smart Technology

EcoNet™ is Ruud’s smart home comfort platform that integrates heating, cooling, and water heating into a single, intelligent system.

When paired with an EcoNet-enabled thermostat, homeowners can:

  • Monitor and control systems remotely via Wi-Fi
  • Adjust comfort settings anytime from anywhere
  • Receive maintenance alerts and performance updates
  • Save on energy costs with optimized schedules

EcoNet helps enhance efficiency, convenience, and year-round comfort—all from the palm of your hand.

Ruud Furnace Warranty Overview

Ruud offers excellent warranty protection across all their furnace tiers, with coverage that improves as you move up the product line. Here’s a quick breakdown of what to expect based on the furnace series and model:

Entry-Level Warranty Coverage

Ruud’s entry-level furnaces are protected by:

  • 10-Year Parts Warranty
  • Lifetime Heat Exchanger Warranty

These standard warranties apply to the following models:

  • Achiever Series R921T
  • Achiever Series R921V
  • Achiever Series R92T
  • Achiever Series R95T
  • Achiever Series R951T
  • Achiever Series R951V
  • Achiever Series R951V Ultra-Low NOx
  • Achiever Plus R96T

Mid-Range Warranty Coverage

Ruud’s mid-tier furnaces come with enhanced protection, including:

  • 10-Year Parts Warranty
  • Lifetime Heat Exchanger Warranty
  • 10-Year Unit Replacement Warranty

This level of coverage is included with:

  • Achiever Plus R962V
  • Ultra Series U96V

Top-Tier Warranty Coverage

Ruud’s premium furnaces come with their most comprehensive warranty package:

  • 10-Year Parts Warranty
  • Lifetime Heat Exchanger Warranty
  • Lifetime Unit Replacement Warranty

Top-tier coverage applies to:

  • Ultra Series U97V
  • Ultra Series U97MV
  • Ultra Series U98MV
  • Ultra Series U98V

Warranty Registration Required

To receive the full benefits of Ruud’s warranty program, you must register your furnace within 90 days of installation. Failing to do so may result in reduced coverage.

RUUD – About the Company

With roots dating back over a century, Ruud was founded by Norwegian mechanical engineer Edwin Ruud, a pioneer in the heating industry. Today, Ruud stands as one of North America’s leading manufacturers of high-quality heating and cooling systems.

The brand is known for its commitment to superior engineering, reliable performance, and continuous innovation. Ruud products are designed to deliver long-term value, and many of their furnaces are ENERGY STAR® certified, making them ideal for homeowners looking to maximize energy efficiency and comfort.

As a premium-tier brand, Ruud offers a wide range of furnaces backed by strong warranties and modern features—ensuring there's a model to suit nearly every home and budget.