Residential and Commercial Generator SALES and Installations

IN San Antonio, Schertz, Converse, Floresville, Elmendorf, New Braunfels, and Surrounding Cities

WE ARE YOUR #1 CERTIFIED CUMMINS GENERATOR DEALER IN TEXAS with no overtime rates.

No interest Financing

Extended Warranties

Competitive Pricing

Power YOUR HOME OR BUSINESS WITH A GENERATOR

AS a full-service licensed electrical, plumbing, and HVAC company, We pour the concrete slab, install electrical, and handle plumbing from start to finish. our customers do not need to juggle numerous contractors and, therefore, save money in the long run.

CALL US TO SCHEDULE A FREE In-HOMe Estimate.

What makes a San Antonio Home Generator right for you?

Benefits of an EMERGENCY BACKUP home Generator in san antonio:

  • Have peace of mind knowing that you and your family will be able to live comfortably through a power outage.

  • You can keep important household systems like refrigerators and septic systems running.

  • Your life doesn't have to stop because of a power outage.

What generator is best for home use?

Every home and business is different. Talk to one of our friendly and knowledgeable technicians and get a free, no-obligation home assessment. We invite you to request a home generator consultation via our online booking form here or by contacting us at (210) 972-0683.

UP TO 10-yr warranty Coverage

We back up your proven Cummins home generator with a competitive base home generator warranty with fewer exclusions than other brands. Cost-effective extended warranty options allow for full coverage up to 10 years.

Financing

No Interest Same AS Cash

WHY CHOOSE EVENFLOW COMMERCIAL & HOME SERVICES?

AFFORDABLE reliable Backup Emergency Systems

LICENSED & INSURED SPECIALISTS

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OUR REVIEWS

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SERVICE AREA MAP

Residential and Commercial Air Conditioning and Heating Services in San Antonio, Schertz, Converse, Floresville, Elmendorf, New Braunfels, and Surrounding Cities

OUR GENERATORS

TOP CERTIFIED Cummins Dealer in Texas

All communities require a stable power source. Unfortunately, outages can happen anytime, so San Antonio residents and business owners need something to jumpstart their operations. Generators are the most reliable option, and Cummins is a renowned brand. They provide a wide array of devices for all applications to ensure the owner receives energy in any circumstance.

Cummins power systems include gas and diesel-powered generators (15-3750 kVA), diesel engines, alternators, and battery storage units. The company manufactures all components of its generators, offering an integrated approach that guarantees a well-coordinated device. Regardless of the challenge, Cummins helps ensure resilient operation at any site through design expertise, first-class equipment, and excellent customer service.

Cummins Home Standby Generators

One of the most common types of generators is a standby unit. These backup power solutions supply a business with power during an outage. Typically, they’re stationary and have a concrete pad that provides a solid foundation outside the facility. Most impressively, these systems provide tremendous power during extended outages. But unlike continuous or prime models, they’re only used during blackouts or inclement weather.

Another quality of standby generators is that they provide power automatically, so the owner doesn’t need to be present during blackouts. For instance, if an owner is on vacation when an outage occurs, the standby system ensures the sump pump and other appliances run without compromising home security. Furthermore, most models can supply the entire home with energy because they operate on unlimited settings.

QuietConnect Home Standby Generator 20kW GENERATOR

  • Designed to be extremely quiet

  • Remote diagnostics capabilities

  • Incredibly efficient operation

  • Extremely compact design

  • Designed for durability

  • Intelligent load management

  • Customizable backup power solutions

San Antonio backup generators for home | Product Sizing

Air cooled units

These units are sized for your normal size home in San Antonio with all gas appliances such as furnace, water heater, stove, and energy efficient lighting. Load shedding is possible in some applications. This will require a site visit to evaluate the system. These systems start at $13,000 and include automatic standby generator, poured concrete slab, automatic transfer switch, electrical infrastructure and plumbing infrastructure for natural gas application, and surge protection. We do have propane and gas options available. (Due to National electrical code requirements some electrical upgrades might be necessary to meet today’s current code requirements for safety and functionality purposes please call for consultation for more accurate pricing. Financing options available.)

Liquid cooled units

These units are size for larger homes that have multiple AC units, pool equipment and with A combination of electrical and gas appliances. These systems start at $24,000 and include automatic standby generator, poured concrete slab, automatic transfer switch, electrical infrastructure and plumbing infrastructure for natural gas application, and surge protection. We do have propane and gas options available. (Due to National electrical code requirements some electrical upgrades might be necessary to meet today’s current code requirements for safety and functionality purposes please call for consultation for more accurate pricing. Financing options available.

50 KW - 125 KW

These units are designed for large homes or ranch style compounds, even some commercial applications. These systems are typically for electrical systems that are 320 amps or greater. For homes that are all electric with no gas appliances. Multiple HVAC systems, large pool systems, multiple buildings or guest houses. These are your workhorse power plants. These systems start at $50,000 and include automatic standby generator, poured concrete slab, automatic transfer switch, electrical infrastructure and plumbing infrastructure for natural gas application, and surge protection. We do have propane and gas options available. (Due to National electrical code requirements some electrical upgrades might be necessary to meet today’s current code requirements for safety and functionality purposes please call for consultation for more accurate pricing. Financing options available.)

San Antonio Portable generator options

Always size a generator at continuous duty not peak power. Also look at the fuel source because that will determine the maximum power output for the generator. The average portable generator can power small appliances such as freezers, refrigerators, microwaves and gas furnaces but cannot power large central AC Systems here in San Antonio and surrounding areas. These systems typically start around $5,000 which includes portable generator, manual transfer switch, electrical infrastructure, portable fuel source, Power cord, generator inlet box and surge protection. (Due to National electrical code requirements some electrical upgrades might be necessary to meet today’s current code requirements for safety and functionality purposes please call for consultation for more accurate pricing. Financing options available.)

Cummins Portable Generators

Portable generators are diesel or gas-powered devices that provide temporary energy. They feature an engine that turns a turbine to create a certain amount of usable electricity, depending on the system’s wattage. Users can supply their tools or appliances directly from portable generators by plugging them into sockets. Alternatively, these systems can be wired into the home’s sub-panel to ensure several machines remain operational during outages.

Portable generators are perfect for commercial applications. For example, construction teams often use them to power their lights and tools at remote sites. Likewise, sports officials can bring them in for night play or operate electronic timers or scoreboards. Residents also use these systems during blackouts to keep their essential appliances running. In most cases, they provide enough energy to keep refrigerators, TVs, lights, and freezers working for an extended period.

Onan P2500i

  • Running watts: 2200

  • Peak watts: 2500

  • Noise level: 52 dB

  • Parallel capable - Capable of paralleling with another P2500 inverter generator and P4500 inverter generator with 50A parallel cord

  • Quiet and durable - Double-insulated

  • Lightweight - Easy to carry

  • Keeps you connected - Low THD for clean power - perfect for sensitive electronics

  • Fuel efficient - 1-gallon fuel tank that runs 10 hours at 25% load

Onan P4500i

  • Running watts: 3700

  • Peak watts: 4500

  • Noise level: 52 dB

  • Push button and remote start - Pull cord backup

  • Quiet and durable - Double-insulated

  • Parallel capable - Capable of paralleling with another P4500 inverter generator and P2500 inverter generator with 50A parallel cord

  • Fuel efficient - 3.4-gallon fuel tank that runs 18 hours at 25% load

  • Lightweight - At 98 lbs. and with a telescopic handle and wheels, it's lighter and easier to manage

Onan P9500df

  • Running watts: 7500 gas | 6750 propane

  • Peak watts: 9500 gas | 8550 propane

  • Noise level: 74 dB

  • Push button and remote start - Pull cord backup

  • Dual fuel with the flip of a switch - Easily switch from gas to propane with a fuel capacity of 6.6.-gallons

  • Essential data display - VFT Data Center displays volts, frequency and lifetime hours

Cummins Commercial and Industrial Generators in san antonio

Cummins is famous for high-quality commercial and industrial generators. Their extensive portfolio delivers distributed power solutions for various needs. For instance, servicing the healthcare sector is one of their niche markets. They offer advanced energy systems for various healthcare applications backed by a 24/7 support and service network. Whether the client has a specialty clinic, new construction, or is expanding their facility, Cummins can deliver prime power and robust trigeneration.

Owners of wastewater processing facilities depend on Cummins generators too. They enable the business to meet backup power requirements or accommodate new treatment plans to provide uninterrupted operation. Since wastewater projects require responsiveness and reliability, the company manufactures user-friendly devices with simplified functions. As a result, their systems help ensure the facility doesn’t lose time or money due to blackouts.

Generator Accessories

Cummins ships their premium generators with outstanding accessories to ensure the highest customer satisfaction. For example, the OTEC Transfer Switch has various features for monitoring, set starting, and emergency standby power. It has straightforward plug connections, terminal markings, and door-mounted controls for simple operation.

The company also produces the RA Transfer Switch, which complies with the highest safety standards. It complements other accessories for easier generator installation and is perfect for virtually any application.

Additionally, Cummins’ clients can gain access to PowerCommand Controls. They help synchronize, protect, and monitor generators in any conditions. These advanced features ensure timely fault detection and alarm notifications.

Whole-House Generator FAQ

  • A whole-house generator is a backup power system that automatically provides electricity to a home during a power outage. It typically runs on natural gas, propane, or diesel and is connected to the home’s electrical system.

  • When there is a power outage, the generator detects the loss of power and automatically starts up. It then switches on and supplies power to the home through an automatic transfer switch (ATS), which isolates the home’s electrical system from the utility grid.

  • The generator size needed depends on the total wattage of the appliances and systems you want to power. You should calculate the combined wattage of essential appliances (such as HVAC systems, refrigerators, and lights) and add a margin for startup surges. It’s often helpful to consult a professional to determine the right size for your needs.

    • Natural Gas: Often preferred for its convenience and lower running cost. However, it relies on a home’s gas supply.

    • Propane: A good option if natural gas is unavailable, but it requires storage tanks and may be more expensive to run.

    • Diesel: Typically more fuel-efficient and better for larger power needs, but can be noisy and requires regular maintenance.

  • The cost of a whole-house generator varies based on its size, type, and installation requirements. Prices range from a few thousand dollars for smaller units to tens of thousands for larger, high-capacity models. Installation costs are additional and depend on factors like site preparation and electrical work.

  • Routine maintenance is crucial to ensure the generator operates reliably. Maintenance is recommended at least once or twice a year. This typically includes checking the fuel system, battery, oil level, and overall system functionality.

  • It depends on the type of generator. Natural gas generators use the home’s gas supply, while propane generators require a separate tank. Diesel generators need a dedicated diesel fuel supply.

  • A generator’s run time depends on its fuel capacity, the load it’s powering, and the fuel type. On average, a generator might run for 8 to 24 hours on a full tank of propane or diesel, but this can vary.

  • Generators do produce noise, but many modern units are designed to operate more quietly. Typically, noise levels are measured in decibels (dB) and range from 50 dB (similar to a normal conversation) to 80 dB (similar to a vacuum cleaner). Check the specifications for noise levels when choosing a generator.

  • Installation involves setting up the generator unit, connecting it to a fuel supply, and installing an automatic transfer switch (ATS). A licensed electrician and a qualified generator technician are recommended to handle the installation to guarantee compliance with local codes and safe operation.

  • Most areas require a permit to install a whole-house generator. The specific requirements and processes vary by location, so check with your local building authority before proceeding with installation.

  • A whole-house generator can power most of your home’s essential systems and appliances, but it might not be able to power everything simultaneously, especially if it’s a smaller unit. Prioritize which systems and appliances are most critical and ensure the generator is sized accordingly.

  • If the generator runs out of fuel, it will shut down, and power will be lost until the fuel is replenished. Regular monitoring of fuel levels and refueling as needed can help prevent this issue.

  • Routine maintenance, including testing the generator under load conditions, checking fuel levels, and ensuring the battery is charged, helps ensure readiness. Perform these checks periodically, and consider scheduling professional maintenance services.

  • Safety concerns include proper installation, ventilation (to avoid carbon monoxide buildup), and scheduled maintenance. Ensure the generator is installed outside in a well-ventilated area away from windows, doors, and vents.

  • Yes, but the feasibility depends on the availability of a fuel supply (such as propane or diesel) and access for maintenance. Property owners must confirm they have a reliable and sustainable fuel source in remote areas.

  • Most whole-house generators are designed to operate in various weather conditions, but extreme conditions (such as heavy snow or flooding) may require additional precautions or temporary shutdowns.

  • A whole-house generator can add value to a home by providing an added layer of convenience and security. It’s particularly appealing in areas prone to frequent power outages.

  • A standby generator is permanently installed, automatically starts during an outage and powers the whole home. A portable generator is movable, needs to be manually started, and typically powers only selected appliances or systems.

  • While some people may attempt DIY installation, it is best to hire a licensed professional for proper installation, safety, and compliance with local codes.

Commercial and Industrial Generators FAQs

  • A commercial or industrial generator is a robust power backup system that supplies electricity to commercial buildings, industrial facilities, or large-scale operations during power outages. They are built to handle higher loads and more demanding operational conditions than residential generators.

    • Commercial Generators are typically used in office buildings, retail spaces, and other business settings. They usually have power capacities ranging from 20 kW to 200 kW.

    • Industrial Generators: Designed for heavy-duty applications such as factories, data centers, and large manufacturing plants. They generally have power capacities from 200 kW to several megawatts.

  • The right size depends on your facility’s total electrical load. Calculate the wattage of all critical equipment and systems that must be powered during an outage. Consulting with an electrical engineer or a generator specialist can ensure accurate sizing and prevent overloading.

    • Diesel: Commonly used due to high power output and reliability. Requires regular maintenance and fuel management.

    • Natural Gas: Convenient if a gas supply is available; cleaner and often less expensive than diesel.

    • Propane: Suitable where natural gas is not available; requires storage tanks.

    • Bi-fuel Systems: Combines diesel and natural gas for flexibility and efficiency.

  • Routine maintenance should be performed quarterly or semi-annually at a minimum, depending on use and manufacturer recommendations. This includes checking fluid levels, battery health, and system functionality.

    • Continuous Operation: Prevents downtime and maintains business operations during power outages.

    • Protection: Safeguards against revenue loss, data loss, and operational disruptions.

    • Compliance: Helps meet regulatory requirements for backup power in some industries.

  • An ATS has several funcitons. In addition to ensuring a seamless transition and preventing interruptions in the power supply, it can:

    • Automatically detect power outages

    • Start the generator

    • Switch the power source from the grid to the generator

  • Installation involves selecting an appropriate location, connecting to a fuel supply, integrating with the building’s electrical system, and setting up the ATS. Professional installation by a licensed technician is crucial for safety and compliance with local codes.

  • Local regulations and permits are required for generator installation in San Antonio. The specific requirements vary, so it’s essential to check with local authorities and comply with building codes and zoning laws.

  • Yes, but the generator must be appropriately sized to handle your facility’s total electrical load. It’s important to assess your power needs and configure the generator to cover critical systems and equipment.

  • Commercial and industrial generators can last 15 to 30 years with proper maintenance. Regular servicing and timely repairs help extend their lifespan and reliability.

  • Regular maintenance, including routine testing under load conditions, fuel checks, and battery inspections, ensures the generator is ready for emergencies. Implement a comprehensive maintenance schedule and conduct periodic performance tests.

  • If your generator is malfunctioning, consult the manufacturer’s troubleshooting guide or contact a technician. Issues could be related to fuel supply, electrical connections, or mechanical components.

  • Fuel management involves monitoring fuel levels, ensuring a reliable supply, and arranging for refueling as needed. Regular fuel testing and treatment are important for diesel generators to prevent contamination.

  • Yes, San Antonio has noise ordinances that may affect generator operation. Ensure your generator complies with local noise regulations, or consider installing soundproof enclosures if necessary.

  • Yes, generators can be integrated with renewable energy sources like solar panels. This setup can enhance energy efficiency and provide additional backup power.

  • Remote monitoring allows you to track the generator’s performance, fuel levels, and operational status from a distance. It provides real-time alerts for maintenance needs and system faults, helping you effectively manage power reliability.

  • Operational costs can be reduced by choosing a fuel-efficient generator, performing regular maintenance, and optimizing load management. Implementing a maintenance schedule and monitoring fuel consumption can also help manage costs.