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DeLonghi EW7707CM-6A

3 source-linked failure reports. Most reported: Electrical shock / short. Typical failure around 4.3 yr.

Reliability signal — · Insufficient data · data confidence Very Low

3 confirmed failure reports

Reliability summary

What is likely to go wrong, when it happens, and how expensive it can be — from source-linked failure reports. Counts are reports in our database, not a population failure rate.

Reliability signal

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3 confirmed failure reports · Insufficient data · Data confidence: Very Low

Need at least 5 confirmed failure-signal reports before showing an A–F grade.

Most common issue
Electrical shock / short
Typical first failure
4.3 yr
Median of confirmed reports with timing
Median repair cost
—
Reported costs only · market varies
Highest reported repair
—
Not a quote · costs differ by country

What breaks?

Failure types

Click a type in the reports section below to filter.

  • Electrical shock / short1 · 33.3%
  • Overheating1 · 33.3%
  • Fire / ignition1 · 33.3%

When does it break?

Failure timing

Months after purchase, using reports that included timing.

What does it cost?

Reported repair costs

Distribution of owner-reported repair costs— not a quote or guarantee. Labor and parts prices vary by country.

No reported repair costs yet for this model.

Median months to failure

52

Failure reports

3

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Median repair cost

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Still recommend

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% repaired

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% mfr warranty

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% extended warranty

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% support helpful

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What breaks?

What breaks? · reports

Electrical shock / short

Kerosene or Oil Heaters (399)

Government / agencyIndexed Oct 28, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20230528-42944-2147347320. Severity: Injury, Seen by Medical Professional. Matched catalog product: DeLonghi EW7707CM-6A. Source model text: EW7707CM 1500 watt. Incident: The oil filled DeLonghi space heater fell over on my leg and caused a serious wound that will take months heal. The design of this heater is particularly dangerous to families with young children, pets and the elderly. The base is completely inadequate to support the weight and height of the heater. Further, its radiator design features very sharp edges, which put a 4 inch gash in my leg through a pair of blue jeans! Imagine if I were wearing shorts, or it fell on a sleeping pet or child! This is a very dangerous product that requires a redesign of its base, which does not support its weight and height.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

Not stated

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

92%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Overheating

Portable Electric Heaters (348)

Government / agencyIndexed Oct 22, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20170323-774D4-2147404930. Severity: Incident, No Injury. Matched catalog product: DeLonghi EW7707CM-6A. Source model text: EW7707CM. Incident: A DeLonghi Safeheat oil filled electric heater overheated and exploded spraying hot oil all over room and on clothing of the person operating heater. The heater was brand new out of the box and was the first time that it was being operated. The operator was not injured and the damage to the room was not permanent. The operator explained that the thermostat control and thermal cut off did not operate causing the unit to overheat.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

Not stated

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

92%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Fire / ignition

Kerosene or Oil Heaters (399)

52 months

Government / agencyIndexed Oct 16, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20250318-70A63-2147332512. Severity: Incident, No Injury. Product: DeLonghi EW7707CM-6A (Product Name: DeLonghi Comfort Temp Full Room Radiant Heater Model Number: EW7707CM-6A Color: Light Gray Size & Dimensions: Height: 25.2 inches Width: 13.8 inches Depth: 10.5 inches Weight: Approximately 23.1 lbs Product Type: Oil-filled radiator heater Power: 1500W, 120V Control Type: Mechanical thermostat with multiple heat settings Features: Comfort Temp Technology: Automatically adjusts heat settings 7 Oil-Filled Fins: Permanently sealed, maintenance-free Safety Features: Alleged overheat protection, thermal cutoff Purpose: This is an electric oil-filled radiator heater designed for indoor home heating, marketed as energy-efficient and safe for full-room heating. It is advertised to provide consistent warmth without requiring maintenance due to its permanently sealed oil reservoir. Retailer & Purchase Information: Purchased From: Amazon Purchase Date: November 20, 2020 Amazon Product Page: https://www.amazon.com/DeLonghi-Comfort-Thermostat-Settings-Features/dp/B000TGDGLU?th=1 Defect Details: Despite claims of safety and reliability, the unit unexpectedly exploded, releasing hot oil under pressure, causing property damage and ongoing exposure concerns.). Incident: What Happened? On February 17, 2025, at midnight, a DeLonghi oil-filled radiator heater (model: EW7707CM-6A) suddenly exploded in a bedroom, causing hot oil to spray forcefully in one direction due to pressure buildup and leak onto the floor and surrounding area. The unit had been operating normally before the incident, with no prior signs of malfunction. The heater was placed on a flat, wood floor, away from any obstructions, and was being used under normal operating conditions to heat a bedroom. Damage & Health Concerns The explosion caused oil to penetrate the engineered wood flooring, leaving irreversible damage despite extensive cleaning efforts. The room continues to

UnverifiedEvidence ★★★★☆
View report details

Months until failure

52 months

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

88%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

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